Kinematics Forces Energy

What type of energy is possessed by a stretched rubber band?

• chemical potential energy

• gravitational potential energy

• elastic potential energy

• light energy

The unit for force is

• N

• m/s

• s

• m

Friction is a force that

• causes an object to move faster.

• changes the mass of an object.

• changes the weight of an object.

• opposes the motion of an object.

The diagram above shows two students, Paul and Peter, pulling on a stationary object, W, on a smooth base. What is the net force acting on W?

• 90 N to the left

• 90 N to the right

• 190 N to the left

• 190 N to the right

Tags

NGSS.MS-PS2-2

The speed of a moving object increases from 20 m/s to 60 m/s in 5 seconds.

What is the acceleration?

• 2 m/s²

• 5 m/s²

• 8 m/s²

• 10 m/s²

Tags

NGSS.HS-PS2-1

The distance travelled by four different trains, A, B, C and D and the time taken by each train are shown above.

Which train has the lowest average speed?

• A

• B

• C

• D

Which of the following statements about forces is not true?

• Force can change the mass of an object.

• Force can change the shape of an object.

• Force can change the speed of a moving object.

• Force can change the direction of a moving object.

Tags

NGSS.MS-PS3-1

For an object that is moving to the right at constant speed, what can be said about the resultant force on it?

• it is 0 N

• It is more than 0 N to the right

• It is more than 0 N to the left

• It is more than 0 N acting downwards

Tags

NGSS.MS-PS2-2

for the object that is shown above, which of the following gives a possible outcome of what happenes next?

• object moves upwards

• object moves downwards

• object's speed increases

• object is at rest

Tags

NGSS.MS-PS2-2

with reference to the graph above, which of the following statements best describe the motion of an object?

• The object is at rest.

• The object is moving with a constant speed.

• The object's speed is changing every second.

• The object is moving in circles.