## vertical motion

A race car accelerates from rest to a velocity of 69 m s-1 at a constant rate of 19 m s-2. The mass of the race car is 1100 kg.

To answer the questions on the right, you will need to apply the equations of linear acceleration, force and momentum.

61 point

Question at position 6

How long does it take to car to reach 69 m s-1?

Express your answer in seconds (s).

How long does it take to car to reach 69 m s-1?

Express your answer in seconds (s).

### QUESTION AT POSITION 7

71 point

Question at position 7

What is the momentum of the car when it is travelling at 67m s-1?Express your answer in kg m s-1.

Express your answer in kg m s-1.

### QUESTION AT POSITION 8

81 point

Question at position 8

What force was required to accelerate the car to 69 m s-1 (ignoring friction)?Express your answer in Newtons (N).

Express your answer in Newtons (N).

### QUESTION AT POSITION 9

91 point

Question at position 9

At the end of the acceleration phase, how far had the car traveled?Express your answer in m.

Express your answer in m.

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