(a) Salim who participates in motor race, leaves the end of a ramp with a speed of 90km/hr as in Figure. If his speed is 85.0 km/r when he reaches the 90 km/h peak of the path, what is the maximum height that he | reaches? Ignore friction and air resistance. (b) A body of mass 6 kg is acted upon by a force of 5 N is moving along a rough floor at a constant speed of 3.5 m/s. Calculate the power consumed in 15 s, and the force of friction acting on the object (a) To find the depth of a water well at home, Martha and Amira drop a heavy rock into the well. After 3s, the rock is 4. dropped, they hear a splash caused by the impact of the rock on the water. What is the height of the well? (Speed of sound in air is 340 m/s). (b) Professor Walter Lewin, for his famous Physics experimental demonstration, hanged a bowling ball from the ceiling by a rope. He then pulls the ball away from its equilibrium position and holds it adjacent to his nose, as shown. He releases the ball so that it swings directly away from him. Does he get struck by the ball on its retum swing? What is he trying to show in this demonstration? 3.

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter5: Newton's Laws Of Motion
Section: Chapter Questions
Problem 44PQ: A student working on a school project modeled a trampoline as a spring obeying Hookes law and...
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(a) Salim who participates in motor race, leaves the end of a ramp with a speed of 90km/hr
as in Figure. If his speed is 85.0 km/r when he reaches the
90 km/h
peak of the path, what is the maximum height that he
| reaches? Ignore friction and air resistance.
(b) A body of mass 6 kg is acted upon by a force of 5 N is moving along a rough floor at a constant speed of 3.5 m/s.
Calculate the power consumed in 15 s, and the force of friction acting on the object
(a) To find the depth of a water well at home, Martha and Amira drop a heavy rock into the well. After 3s, the rock is
4.
dropped, they hear a splash caused by the impact of the rock on the water. What is the height of the well? (Speed
of sound in air is 340 m/s).
(b) Professor Walter Lewin, for his famous
Physics experimental demonstration,
hanged a bowling ball from the ceiling by a
rope. He then pulls the ball away from its
equilibrium position and holds it adjacent to
his nose, as shown.
He releases the ball so that it swings directly
away from him. Does he get struck by the
ball on its retum swing? What is he trying to show in this demonstration?
3.
Transcribed Image Text:(a) Salim who participates in motor race, leaves the end of a ramp with a speed of 90km/hr as in Figure. If his speed is 85.0 km/r when he reaches the 90 km/h peak of the path, what is the maximum height that he | reaches? Ignore friction and air resistance. (b) A body of mass 6 kg is acted upon by a force of 5 N is moving along a rough floor at a constant speed of 3.5 m/s. Calculate the power consumed in 15 s, and the force of friction acting on the object (a) To find the depth of a water well at home, Martha and Amira drop a heavy rock into the well. After 3s, the rock is 4. dropped, they hear a splash caused by the impact of the rock on the water. What is the height of the well? (Speed of sound in air is 340 m/s). (b) Professor Walter Lewin, for his famous Physics experimental demonstration, hanged a bowling ball from the ceiling by a rope. He then pulls the ball away from its equilibrium position and holds it adjacent to his nose, as shown. He releases the ball so that it swings directly away from him. Does he get struck by the ball on its retum swing? What is he trying to show in this demonstration? 3.
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