Q1 in a crash test a 1300 kg car slams into a concrete wall, Ask an Expert

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Q1. In a crash test, a 1300 kg car slams into a concrete wall at 18.8 m/s and comes to rest in 0.275 s. a) Find the magnitude of the impulse delivered to the car. b) Find the average stopping force.

Q2. A 85 cm diameter wheel accelerates uniformly from 200 rpm to 365 rpm in 5.5 s. how far will a point on the edge of the wheel have travelled in this time?

Q3. A 0.180 kg baseball, travelling 32.0 m/s, strikes catcher's mitt that recoils 13.0 cm in bringing the ball to rest. What was an average force (in newtons) applied by the ball to the mitt?

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