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Physics of Motion and Energy

Question 1

Short answer
What is the kinetic energy of the car travelling at 100 mph, assuming the car has a mass of 1500 kg? Can you calculate this at the moment?

Question 2

Short answer
Describe the forces acting on the car as it travels at a constant speed of 100 mph on a level road. What is constant speed? What is constant acceleration?

Question 3

Short answer
Predict what would happen if the car were to collide with a stationary object, like the wall from the myth-busters video, and explain the principles of momentum and energy conservation that apply.

Question 4

Short answer
If the car were to suddenly brake to a stop to avoid a collision, what distance would it need to come to a complete stop, assuming an average deceleration of 10 m/s²? Do you know how to calculate this?

Question 5

Short answer
How would the car's stopping distance be affected if the road were wet? Explain the role of friction in this scenario.

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