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P5: Quiz 17
P5: Quiz 17
1) Describe the energy transfers when a car is braking.
2) A car that is travelling at 30 m/s performs an emergency stop. The braking distance for the emergency stop is 25 metres. The car has a mass of 1,400 kg.
a) Calculate the deceleration.
b) Calculate the braking force.
3) A van that is travelling at 24 m/s performs an emergency stop. The braking distance for the emergency stop is 26 metres. The van has a mass of 3,500 kg.
Calculate the braking force. Give your answer to 2 significant figures.
2) A car that is travelling at 30 m/s performs an emergency stop. The braking distance for the emergency stop is 25 metres. The car has a mass of 1,400 kg.
a) Calculate the deceleration.
b) Calculate the braking force.
3) A van that is travelling at 24 m/s performs an emergency stop. The braking distance for the emergency stop is 26 metres. The van has a mass of 3,500 kg.
Calculate the braking force. Give your answer to 2 significant figures.