When in Rome Review

Your friend rolls a soccer ball across the field. Immediately after the ball leaves your friend's foot, which of the following forces are acting on the soccer ball?

• the force of the kick

• a normal force with the ground

• friction with the ground

• the force of gravity

Tags

NGSS.MS-PS2-2

What happens to the motion of a hockey puck after it is hit on a frictionless ice surface?

• The puck moves at a constant speed.

• The puck gradually comes to a stop.

• The puck moves at a constant speed for a while, then stops.

• The puck accelerates continuously.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What forces are acting on a block sliding down an inclined plane?

• frictional force

• normal force

• centripetal force

• force of gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4

What happens to the velocity of a cart when it is pushed with a constant force on a frictionless surface?

• It remains constant.

• It decreases gradually.

• It increases steadily.

• It increases initially, then remains constant.

Tags

NGSS.MS-PS2-2

A block is sliding on a frictionless surface and reaches a point where the surface becomes rough. What happens to the block's motion as it continues to move?

• It moves at a constant speed.

• It begins to slow down immediately.

• It continues at constant speed for a while, then slows down.

• It continues to accelerate.

Tags

NGSS.MS-PS2-2

Eventually, the cart travels off the edge of the table. After the cart leaves the table and is in the air, which of the following forces act on the cart?

• the force of motion

• a normal force

• sliding friction

• the force of gravity

Tags

NGSS.MS-PS2-4

A horizontal force of 500 N is required to move a 200 kg box across a flat surface at a constant velocity. What is the coefficient of friction between the box and the surface?

• 0.200

• 0.255

• 0.300

• 0.350

Tags

NGSS.MS-PS2-2

You are pulling a sled (mass = 20 kg) across a snowy field at a constant speed. You apply a force of 150 N on the rope, which makes a 40° angle with the horizontal. What is the horizontal component of the force you apply?

• 115.00 N

• 96.50 N

• 120.00 N

• 98.30 N

Tags

NGSS.MS-PS2-2

You are pulling a sled (mass = 20 kg) across a snowy field at a constant speed. You apply a force of 150 N on the rope, which makes a 40° angle with the horizontal. What are the vertical forces on the sled?

• Gravity and Normal Force

• Gravity, Normal Force, and a component of Tension

• Gravity, Normal Force, and Friction

• Gravity, Normal Force, Tension, and Friction

Tags

NGSS.MS-PS2-2

You are pulling a sled (mass = 20 kg) across a snowy field at a constant speed. You apply a force of 150 N on the rope, which makes a 40° angle with the horizontal. How would you find the normal force on the sled?

• Subtract the vertical component of your applied force from gravity

• Add the vertical component of your applied force to gravity

• Subtract the applied force from gravity

• Add the applied force to gravity

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-4