SCI 520Physics Quiz

Which of the following is the correct equation for Newton's second law of motion? Choose the answer that you feel makes the most sense. If you are unsure of an answer, go on and come back to it later.

• F=ma

• F=mv

• F=m/a

Tags

NGSS.MS-PS2-2

A 20 kg ball is accelerating to the right at a rate of 10 m/s/s. Calculate the force of the ball. Mark only one oval.

• 10 N

• 3 N

• 200 N

Tags

NGSS.MS-PS2-2

Kyle pushes a box across a frictionless ground at a constant rate of 12 m/s. Calculate the force. Mark only one oval.

• 12 N

• 0 N

• 58 N

Determine the accelerations that result when a 20-N net force is applied to a 5-kg object and then to a 10-kg object. Mark only one oval.

• 25 m/s/s and 30 m/s/s

• 4 m/s/s and 2 m/s/s

• 100 m/s/s and 200 m/s/s

Tags

NGSS.MS-PS2-2

Suppose that a sled is accelerating at a rate of 2 m/s/s. If the net force is tripled and the mass is doubled, then what is the new acceleration of the sled? Mark only one oval.

• 3 m/s/s

• 4 m/s/s

• 20 m/s/s

Tags

NGSS.MS-PS2-2

In a physics lab, Joe and Deb exert a 22 N rightward force on a 0.500-kg cart to accelerate it across a low-friction track. If the total resistance force to the motion of the cart is 3 N, then what is the cart's acceleration? Mark only one oval.

• 25 m/s/s

• 21.5 m/s/s

• 38 m/s/s

Tags

NGSS.MS-PS2-2

What is the correct equation for calculating momentum? Mark only one oval.

• M=va

• p=mv

• p=av

Which has the most momentum? Mark only one oval.

• a parked car

• a car accelerating onto the highway

• a car slowing down

• an airplane cruising down the runway

Which of the following does not impact momentum? Mark only one oval.

• the amount of velocity an object has

• the amount of mass an object has

• the position of the receiver of the object

• the direction in which the object is moving

A 2000 kg car is traveling 10 m/s. What is its momentum? Mark only one oval.

• 200 kg m/s

• 20,000 kg m/s

• 100 kg m/s