A car is traveling at the speed of 72.0kph. Unfortunately, the car's driver sees a man standing 10.0m in front of his car. What should be the acceleration of the car, so that it cannot strike the man?

A car is traveling at the speed of 72.0kph. Unfortunately, the car's driver sees a man standing 10.0m in front of his car. What should be the acceleration of the car, so that it cannot strike the man?

An Introduction to Physical Science

14th Edition

ISBN:9781305079137

Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Publisher:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar Torres

Chapter2: Motion

Section2.3: Acceleration

Problem 2.4CE: If the car in the preceding example continues to accelerate at the same rate for an additional 3.0...

See similar textbooks

Related questions

Q: The figure shows an overhead viewof a0.025 kg lemon half and two of the thren horizontal forces that...

Q: An instructor wishes to determine the wavelength of the light in a laser beam. To do so, she directs...

A: The fringe width of the interference obtained from YDSE is given by:- w= λD/d Where; λ= wavelength D...

Q: R1: - If the mass of the climber shown on the moon, the percentage of gravity acceleration on the mo...

A: We are authorized to answer one Question at a time, since you have not mentioned which question you ...

Q: 7. A young girl (m = 30 kg) rides a skateboard (m = 3.2 kg) at a speed of 4.2 m/s. (a) How much work...

Q: A radioactive sample decays with an average-life of 20 ms. A capacitor of capacitance 100 uF is char...

Q: An X-ray tube operates at 20 kV. A particular electron loses 5% of its kinetic energy to emit an X-r...

Q: Take a look at Figure 3. Please find the current through the segment of the bottom wire between the ...

Q: Length of card (m) 0.204 Hanging Mass, ma (kg) 0.20 Ассеpted Midtime Experimental Value of Hover Mid...

A: Given the graph of acceleration Vs mass as given below: The graph has to be analyzed.

Q: A circuit has a resistance of 100Ω. How can it be reduced to 60Ω? Prove your answer by solution.

A: According to question we need to find that how reduce 100 ohm resistance to 60 ohm resistance.

Q: rock is thrown horizontally from a cliff 110 feet high. Initial velocity is 20 ft/s. How far from th...

Q: Prove that the electric field of the point charge is radial by comparing your values in column 5 tab...

Q: F, (N) F, (N) y; F; (N) 5.0 15 20 10 2.0아 y (m) 1.0 5.0- -10 x (m) 40 z (m) -20 20 10 20 30 10 15 Ca...

Q: A camera is used to photograph the full moon, which has an angular diameter of 0.53°. The image on t...

A: Given: the angular diameter θ = 0.53o×π180o rad = 0.00925 rad; the diameter of the image on the fi...

Q: Consider the circuit shown. Let ε=16.0 and let R1=R2=R3=R4=6.00Ω. What is the voltage across R3? A. ...

Q: What potential difference is needed to stop an electron having an initial speed of 4.20 x 105 m/s?

Q: Which of the following statements is/are ALWAYS TRUE for the resistivity and conductivity of a mater...

A: Resistivity - Resistivity of a material is the resistance per unit length and cross section of area....

Q: The figure below shows a slab made of three different materials X, Y and Z having refractive indices...

A: Dear student, Part d has insufficient information to answer. Hence I'm answering only first 3 subpa...

Q: A scientist is carrying out an experiment to determine the index of refraction for a partially refle...

A: Angle of incidence, θi = 46° Required: (a) Refractive index of material, n = ? (b) Angle of refra...

Q: A car is driven east for a distance of 42 km, then north for 25 km, and then in a direction 31° east...

Q: Hanging Mass, m2 (kg) Experimental Length of card (m) 0.204 0.20 Accepted Hover Midtime Midtime 2 (s...

A: Average velocity is defined as V = total displacement / total time As displacement is vector quantit...

Q: 4. A ball is thrown horizontally from the rooftop of a 150m- high building. If the ball landed 17.5m...

A: Given: The height of the building is 150 m. The horizontal distance covered by the ball is 17.5 m.

Q: Calculate the currents I1, I2 and I3 in the three branches of the circuit shown below. 30 2 E2 = 40 ...

Q: B D E Photograph NOTE: Some of the pictures above may show both a real image & a virtual image. REAL...

A: Option A and C shows the virtual images as it can be seen from the picture that the image...

Q: Gayle runs at a speed of 3.30 m/s and dives on a sled, initially at rest on the top of a frictionles...

Q: An object is subject to a force F = (571i − 101j) N such that 10,925 J of work is performed on the o...

Q: Dragon Balls. Given the set of point charges each with charge +Q as shown, what is the electric pote...

A: The electric potential is KQ/R

Q: For friction electrified white and black charge generators. The values read on the electrometer ar...

A: Potential is given by V = KQ/R

Q: A piece of copper wire has a resistance per unit length of 5.12 × 10-3/m. The wire is wound into a t...

Q: what is the person's weight? 3. A 75-kg woman in an elevator is accelerating upward at a rate of 0.6...

A: Given, Mass=75kg Acceleration=0.6m/s²

Q: 21.67 Two particles having charges q 0.530 nC and 42 = 8.30 nC are separated by a distance of 1.17 m...

A: “Since you have asked multiple question, we will solve the first question for you. If you want any s...

Q: A cue ball in a billiards table hits the 8-ball to finish the game. Which of the following statement...

A: According to the law of conservation of linear momentum, the linear momentum of a system, comprising...

Q: In the figure, we must apply a force of magnitudie 81.ON to hold the block stationary at x-2.00 cm. ...

A: Given:- F= -81 N x= -2 cm = -0.02 m W= 6 J Applying equilibrium condition:- Kx= F => K= F/x= 81/0...

Q: (a) Two insulated charged copper spheres A and B have their centres separated by a distance of 50 cm...

Q: 2. A 1.5-kg box is released from rest on a frictionless surface that is sloped at 0 = 35° above the ...

A: GivenMass of box ,m=1.5 kgAngle ,θ=35°Sliding plane is 1 m longμk=0.12

Q: 2. Use the grid method to show that specific gravity is dimensionless. (All dimensions cancel out)

Q: The average annual electricity consumption of a United States citizen was 10715 kWh in 2020, which c...

A: Given Avg annual electricity consumption E =10715 kWh = 10715 ×3.6×1=3.8574 ×1010 J corresponds to ...

Q: For the circuit shown below, use Kirchhoff's law to Calculate each of the unknown currents I1, 12, a...

Q: A 32.7 A current flows in a long, straight wire. Find the strength of the resulting magnetic field a...

Q: Consider the series DC circuit shown below. 6.0 2 8.0 N 4.0 2 a (a) 12 3.0 2 (a) Find total resistan...

Q: Phil Younghusband is a football player of azkals, he kicks off from the 40 yard line. How far will t...

Q: The three balls in the overhead view of the figure are identical. Balls 2 and 3 touach eachother and...

A: diagram is shown above.

Q: Suppose that a bar magnet is dropped through a horizontal loop of wire connected to a galvanometer. ...

A: since the loop/ coil is kept horizontal and the bar magnet is dropped through it , so there will man...

Q: Calculate the outer radius of the hollow tube. A cylindrical capacitor consists of a solid inner con...

A: Given Data, Radius of solid inner cylinder (a)=0.250 cm Length of the cylinder (L)=14.0 cm The Capac...

Q: Velocity function=1.2t² + 5 Distance Travelled, → So lv (t)| dt = f (1.2t° + 5) dt » 1.2- + 5t - 3 8...

A: Given Velocity function V= 1.2t2 +5

Q: he Sun’s mass is 2.0×1030kg, its radius is 7.0×105km, and it has a rotational period of approximatel...

A: Given: M=2.0*1030 kgRi=7.0*105 kmTi=28 daysRf=3.5*103 km

Q: A long, straight wire carrying a current of 296 A is placed in a uniform magnetic field that has a m...

A: current in wire (I) = 296 A magnetic field (B) = 6.21×10-3 T

Q: Newton's law of cooling indicates that the temperature of a warm object, such as a cake coming out o...

Q: The metal plates of Capacitor A has an area of 1m2 separated by a distance of 0.002 m. If a pyrex gl...

Q: When the radius is increased, does the period of rotation increase or decrease?

A: When a body rotates, it does so in a circular fashion. Doing so, it covers a circle, and let this ci...

Q: An isolated sphere has a capacitance of 50 pF. (a) Calculate its radius. (b) How much charge should ...

Concept explainers

Relative Velocity

It is a measurement of an object with regards to the other object which is moving or stable or stationary. For example, if we are traveling in a bus and the bus is moving at speed of 50km/hr, then our speed is according to the nearby passenger on the bus is zero. According to them, we are not moving. But if one person standing on the ground or road observes us from outside of the bus, according to him we are moving at a speed of 50km/hr and the bus is also moving at a speed of 50km/hr. Now, the motion is recognized by the observer, it depends on a frame of reference or observer. This is motion called relative motion.

Question

A car is traveling at the speed of 72.0kph. Unfortunately, the car's
driver sees a man standing 10.0m in front of his car. What should be
the acceleration of the car, so that it cannot strike the man?

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 2 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

Two friends decide to travel in opposite directions (from the same starting point) on their bikes. The girltravels at 6.00 m/s [E], while her friend speeds off at a rate of 6.50 m/s [W]. What is the distance separatingthe friends after 20.0s?
If a stone is thrown straight upward with the initial velocity viy=34 m/s, what is the velocity of the stone (m/s) at t=27 s?
A flower pot falls off a window. The window is 2.0 m from the ground. What isthe speed of the flower pot as it hits the ground?
A stone is thrown upward from a cliff at an angle of 35 degrees above the horizont with a speed of 47 m/s. The stone hits the ground 5.0 s later. a) What is thexcomponcnt of the stones initial velocity?
You are traveling in a convertible with the top down. The car is moving at a constant velocity of 14.7 m/sdue east along flat ground. You throw a tomato straight upward at a speed of 6.76 m/s. How far has the car moved when you get a chance to catch the tomato?
A boat heads directly accross a river 220 m wide. it takes it 570 seconds to cross, but it ends up 100 m downstream. what its peed relative to the water? that is how fast is the boat?
In 1999, Robbie Knievel was the first to jump the Grand Canyon on a motorcycle. At a narrow part of the canyon (69.0 m wide) and traveling 35.8 m/s off the takeoff ramp, he reached the other side. What was his launch angle?
Check your Understanding A cyclist rides 3 km west and then tune around and tides 2 kin east. (a) What Is his displacement? (b) What is the distance traveled? (c) What is the magnitude of his displacement?
In the blizzard of ’88, a rancher was forced to drop hay bales from an airplane to feed her cattle. The plane flew horizontally at 160 km/hr and dropped the bales from a height of 80 m above the flat range, (a) She wanted the bales of hay to land 30 m behind the cattle so as to not hit them. Where should she push the bales out of the airplane? (b) To not hit the cattle, what is the largest time error she could make while pushing the bales out of the airplane? Ignore air resistance.
A diver explores a shallow reef off the coast of Belize. She initially swims 90.0 m north, makes a turn to the east and continues for 200.0 m, then follows a big grouper for 80.0 m in the direction 30 north of east. In the meantime, a local current displaces her by 150.0 m south. Assuming the current is no longer present, in what direction and how far should she now swim to come back to the point where she started?
A small plane flies at 200 km/h in still air. If the wind blows directly out of the west at 50 km/h, (a) in what direction must the pilot head her plane to move directly north across land and (b) how long does it take her to reach a point 300 km directly north of her starting point?
If the car in the preceding example continues to accelerate at the same rate for an additional 3.0 s, what will be the magnitude of its velocity in m/s at the end of this time?