Mid Term Exam Review

One person pulls on a rope with a force of 400 N to the left. Another person pulls on the rope opposite end with a force of 600 N to the right. What is the unbalanced net force?

• 200 N to the right

• 400 N to the right

• 600 N to the right

• 1000 N to the right

Tags

NGSS.HS-PS2-1

Newton's first law of motion states:

• An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

• Acceleration is produced when a force acts on an outside mass.

• The greater the mass of the object, the greater the force needed to accelerate

• For every action, there is an equal and opposite reaction

Newton's second law of motion states:

• An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

• Acceleration is produced when gravity acts upon it.

• The greater the mass of the object, the greater the force needed to accelerate

• For every action, there is an equal and opposite reaction

Tags

NGSS.HS-PS2-1

Newton's third law of motion states:

• An object in motion will remain in motion and an object at rest will remain at rest unless acted upon by an outside force.

• Acceleration is produced when gravity acts upon it.

• The greater the mass of the object, the greater the force needed to accelerate

• For every action, there is an equal and opposite reaction

A student runs a distance of 2 meters in 15 seconds. What is his speed?

• 13 m/s

• .13 m/s

• 133 m/s

• 13.3 m/s

Tags

NGSS.MS-PS3-1

An object with a mass of 2.0 kg accelerates 2.0 m/s² when an unknown force is applied to it. What is the amount of the force?

• 40 N

• 4.0 N

• .40 N

• 400 N

Tags

NGSS.HS-PS2-1

An experiment was designed to investigate the effect of caffeine on the heartbeat of water fleas. Two populations of water fleas were grown. Both populations had water with the same mineral content, were supplied with identical amounts of food, received the same amount of light, and had their temperature maintained at 20ºC. Every two hours, water fleas from both populations were selected and their heartbeats were monitored. The fleas of population one had caffeine administered five minutes before their heartbeat was checked. The fleas of population two were given nothing. After the experiment, fleas that has been administered caffeine has a heartbeat rate of 58 beats per minutes on average, while the fleas that had not been administered caffeine has a heartbeat rate of 46 beats per minutes on average. What was the independent variable in this experiment?

• Temperature
• Light
• Heart rate
• Caffeine

Tags

NGSS.HS-PS1-5

Which variable in an experiment does a researcher manipulate?

• Dependent variable
• independent variable
• controls

Weight is _________.

• the quantity of matter in an object.

• the measure of an object's inertia.

• the force exerted by gravity on an object's mass.

• equal to the mass of an object.

Tags

NGSS.HS-PS2-4

If you run around the football field (which is 2 miles) 3 times, what is your distance? What is your displacement?

• distance 0 miles, displacement 6 miles

• distance 3 miles, displacement 2 miles

• distance 6 miles, displacement 0 miles

• distance 9 miles, displacement 3 miles