College Physics
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Publisher: Cengage Learning
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- A force platform sensor used to measure the force of impact a 65.0 kg person makes with it after jumping down from a height of 0.600 m. During the contact time of 0 to 0.800 s, the platform records an average force on it of -1226.67 N.
- What impulse did the person receive from the platform?
- What was the velocity of the person right before they hit the platform? Neglect air resistance.
- What was the velocity of the person right after they left the platform?
- What was the average net force acting on the person?
- Using your answer from (d), determine the average contact force acting on the person.
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- help asappparrow_forwardA 0.50-kg object travelling at +1.00 m/s collides with a 1.50-kg object that is travelling at -1.00 m/s. They stick together after the collision. What is the final velocity on the combination? Determine the impulses on each to show they follow Newton’s 3rd law. Determine the change in kinetic energy.arrow_forwardPlease asaparrow_forward
- A 0.450 kg hammer is moving horizontally at 9.00 m/s when it strikes a nail and comes to rest after driving it 1.00 cm into a board. a. Calculate the duration of the impact in seconds. b. What was the average force in newtons exerted on the nail? _______ Narrow_forwardA rutber bell and a clay ball have oqual mass and are dropped onto a digital scale. The rubber ball bounces back to nearly the same height. The clay bell sticks to the scale when it hits. For the (single) imeraction with the scale. a. Whar is the ratio af the change of the clay ball's momentum to the change of the rubber ball's momentum? b. What is the ratio of the impulse impaned to the clay ball to the impulse imparted so the rubber ball? Iruter c. Which of the following graphs could epresent, o the same scale, the force exerned by the scale on each ball as a function of time? Select an answer for the rubber ball and an ansaer for the clay ball. F(N) F(N) F(N) I (s) I (s) 1 (s) F(N) F(N) clay ball: rubber ball: B) 1 (s) D) I (s)arrow_forward
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