Newton's Laws Review

Whenever an object is moving, there is always this force opposing the motion:

• inertia

• momentum

• friction

• applied force

If an object is moving to the right, this force is pushing or pulling to the left:

• friction

• applied

• normal

• tension

Tags

NGSS.MS-PS2-2

The force that keeps objects on top of surfaces instead of letting them sink into the surface is known as:

• normal

• abnormal

• static

• inertia

Tags

NGSS.3-PS2-1

The force exerted by ropes and chains is called

• tension

• normal

• elastic

• mechanical

Tags

NGSS.HS-PS2-1

With few exceptions, forces

• always come in pairs

• are always equal

• must be balanced

• must be unbalanced

Tags

NGSS.MS-PS2-1

A box is moving to the left up a ramp. Which way is the force of friction pointing?

• down the ramp to the right
• up the ramp to the left
• there is no friction
• straight up

Tags

NGSS.MS-PS2-2

What is the speed of an object that travels 60 meters in 4 seconds?

• 240 m/s
• 15 m/s
• 0.067 m/s
• 15 mph

A different runner trains for a marathon for 6 months by eating nothing but bags of french fries from McDonalds. They run a 10 meter dash in 100 seconds. What is their speed?

• 0.01 m/s
• 0.1 m/s
• 1 m/s
• 10 m/s

A box slides across a perfectly smooth floor at a constant velocity. (The phrase "perfectly smooth" suggests that there is NO friction). What forces act on the box?

• tension, gravity
• tension, gravity, normal force
• tension, gravity, normal force, friction
• gravity, normal force, friction

Tags

NGSS.HS-PS2-1

What forces act on the ball as it moves around the "perfectly smooth" loop? ("perfectly smooth" suggests there is NO friction)

• normal, friction, tension
• normal, friction
• normal, gravity, tension
• normal, gravity

Tags

NGSS.MS-PS2-2