Motion of an Object

Which line on the following graph represents a constant speed?Which line on the following graph represents a constant speed?

• A

• B

• C

• D

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NGSS.MS-PS3-1

The size of the acceleration acting on an object of mass 10 kg that has a net force of 3 N acting on it will be:

• 3.33 m/s².

• 30 m/s².

• 0.3 m/s².

• 13 m/s².

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NGSS.MS-PS2-2

An object starts from rest and accelerates at 5 m/s/s. After 4 seconds, its speed will be:

• 0.

• 20 m/s.

• 10 m/s.

• 30 m/s.

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NGSS.MS-PS2-2

The tendency of an object to resist changes in its motion is called:

• inertia

• friction

• work

• weight

How long would a car travelling at a speed of 60 km/h take to cover a distance of 90 km?

• 2½ hours

• 3½ hours

• 1½ hours

• 4½ hours

The change in position of an object and its direction is known as:

• average speed

• displacement

• average velocity

• distance

A cyclist has a weight of 500 N, the road pushes up with 500 N, the thrust force is 30 N and the drag is 32 N. The cyclist will be:

• decelerating

• accelerating

• travelling at constant velocity

• stationary

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NGSS.MS-PS2-2

An object is acted upon by a thrust force of 50 N and a total frictional force of 40 N. The net force will be:

• 90 N backwards

• 90 N forwards

• 10 N forwards

• 10 N backwards

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NGSS.MS-PS2-2

Distance is the length of the actual path travelled. What is displacement?

• The distance between the starting point and end point

• The amount of liquid that has to move when you get in the bath

• The area covered on the journey

• The total distance travelled

A car has an unfastened load on its roof racks. It slams its brakes on and the load falls off at the same speed the car was travelling at.

Which of Newton’s three laws of motion is this an example of? Select the most correct option.

• Newton's first law

• Newton's second law

• Newton's third law

• Newton's law of momentum

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NGSS.MS-PS3-5