CHAPTER 2 (ASSESSMENT 1)

A water wave takes 5.02 s to travel the length of a tank 3 times. What is the speed of the water wave if the tank is 1.5 m long?

• 8.96 m/s

• 0.299 m/s

• 0.299 cm/s

• 0.896 m/s

Which of the following is the correct formula for calculating acceleration?

• velocity = acceleration x time

• acceleration = change in velocity x time

What is the acceleration of a runner who increases her velocity from 2 m/s to 8 m/s in 3 s ?

• 1350 N

• 1.35 N

• 66.7 N

• 15 N

What is the momentum of a car mass 1000 kg travelling with a velocity of 24 km/h?

• 400 000 kg m/s

• 6 700 kg m/s

• 24 000 kg m/s

• 2 800 kg m/s

A car joins a road at a speed of 14 m / s and accelerates at 4.0 m / s2 for 5.0 seconds.

What is the final speed of the car?

• 18 m / s

• 20 m / s

• 32 m / s

• 34 m / s

The gravitational field strength is 8.8 N / kg on Venus and 3.8 N / kg on Mars.

An object has a weight of 42 N on Venus.

What are the mass and the weight of the object on Mars?

• A

• B

• C

• D

A car has a mass of 1500 kg. A constant resultant force acts on the car and the car accelerates from 15 m / s to 20 m / s in 4.0 seconds.

What is the magnitude of the resultant force acting on the car?

• 300 N

• 1200 N

• 1900 N

• 7500 N

Which graph represents an object that is moving at constant speed?

• 
• 
• 
• 

A rocket is launched upwards from the surface of the Moon.

Hot gases are ejected downwards over a very short period of time.

Which statement is not correct?

• The rocket experiences a downward force.

• The rocket experiences an upward force.

• The total momentum of the hot gases is equal to the momentum of the rocket.

• The total momentum of the hot gases and rocket when the hot gases have been ejected is

  zero.