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What is the (i) vertical acceleration (ii) horizontal acceleration of a projectile at any instant?
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- 3. A cannon on Earth (located at the origin) launches a projectile, of mass m, horizontally at height y = 0 m with speed vo, as shown in the figure below: y (m) ↑ x (m) Fw There is a strong wind that imparts a force with constant magnitude Fw, in the negative x-direction, on the projectile as it is airborne. Vo"Which is an accurate statement for general projectile motion, when the projectile is at the highest point of its trajectory?" Its acceleration is zero. Its velocity is perpendicular to the acceleration. Its velocity and acceleration are both zero. The horizontal component of its velocity is zero.A bullet is fired horizontally with an initial velocity of 500 m/s at a target located 250 m from the rifle.(a) How much time is required for the bullet to reach the target?s(b) Using the approximate value of g = 10 m/s2, how far does the bullet fall in this time?
- The ball hit by a baseball player leaves the baseball bat at an initial velocity of 28 m / s upward at height of 0.9 from the ground, at an angle of 61 degrees from the horizontal. Neglecting the air resistance, a) If the ball is not caught, find out how far it has traveled horizontally and then landed. b) What must be the acceleration of another player who is standing at the point where the ball is hit and starts running 2 seconds after the ball is hit so that he can catch the ball just before it hits the ground (at ground level)? (g = 9.8 m / s ^ 2)three situations in which identical projectiles are launched (at the same level) at identical initial speeds and angles. The projectiles do not land on the same terrain, however. Rank the situations according to the final speeds of the projectiles just before they land, greatest first.The record distance in the sport of throwing cowpats is 81.1 m. This record toss was set by Steve Urner of the United States in 1981. Assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) Determine the initial speed of the projectile.
- A projectile is launched from the roof of a 82 m tall building at an angle of 30˚ and an initial velocity of 15m/s. Calculate (a) the maximum height reached by the projectile and (b) the horizontal distance travelled by the projectile when it reaches maximum height.(3) A basketball player is running at 4.60 m/s directly toward a 3 meter high basket when he jumps into the air to dunk the ball. He maintains the given horizontal velocity. (a) What initial vertical velocity (in m/s) does he need to rise to a maximum height 3 meters above the floor? (b) How far (in m) from the basket (measured in the horizontal direction) must he start his jump to reach his maximum height at the same time as he reaches the basket?Use the graph below to answer the next three questions. Two projectiles are launched on a planet without an atmosphere (g is NOT 9.8 m/s). Projectile A is in motion for 6 seconds, while projectile B is in motion for 3 seconds before hitting the ground. The +x direction is horizontal and the +y direction is up. 40 32 16 B. 2. 8. x (meters) 10 12 y (meters) 24
- As a projectile moves through its parabolic trajectory, which of these quantities, if any, remain constant:(a) speed, (b) acceleration, (c) horizontal component of velocity, (d) vertical component of velocity?1. A projectile, fired at an angle of 45º to the ground, takes 3 s to reach the top of its path. (a) How long does it travel before it hits the ground? (b) What acceleration does the projectile have? (c) What effect will increasing the angle at which the projectile is fired have on the horizontal component of the velocity of the projectile? (d) What effect will increasing the angle at which the projectile is fired have on its acceleration?True or False, An object launched horizontally off a cliff will have no velocity initially in the y-direction.