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The kinetic energy of a car travelling along a level road depends on. the distance the car travels the frictional forces acting on the car the mass of the car only the speed of the car only the mass and speed of the car. Which row of values would result in the greatest kinetic energy?.

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the kinetic energy of a car travelling along a level road depends on
The kinetic energy of a car travelling along a level road depends on
  • the distance the car travels
  • the frictional forces acting on the car
  • the mass of the car only
  • the speed of the car only
  • the mass and speed of the car
slide3

A 20 N weight is hung on a spring balance. The spring extends by 0.10 m. The weight is removed and a bag of potatoes is hung on the balance. The spring extends by 0.15 m.What is the weight of the bag of potatoes?

  • 10 newtons
  • 15 newtons
  • 20 newtons
  • 30 newtons
  • 50 newtons
slide4

A car designer wants to increase the maximum acceleration of a car.Which entry shows what should be done to the engine force and the mass of the car?

a newton balance is used to measure
A newton balance is used to measure
  • distance
  • force
  • gravitational potential energy
  • kinetic energy
  • power
slide7

8N

8N

4N

4N

4N

8N

4N

8N

4N

8N

8N

4N

8N

4N

The diagrams below show the forces acting on a number of moving objects. Which object is moving at constant speed?

1.

2.

3.

4.

5.

the kinetic energy of a car travelling along a level road depends on1
The kinetic energy of a car travelling along a level road depends on
  • the distance the car travels
  • the frictional forces acting on the car
  • the mass of the car only
  • the speed of the car only
  • the mass and speed of the car
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