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Science Review - 8th Grade Physics

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43 cards

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Section 1

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20 m

Front

1 / 43

Physics

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Last updated

6 years ago

Date created

Mar 14, 2020

Cards (43)

Section 1

(43 cards)

20 m

Front

At what height would you have 25% potential and 75% kinetic energy?

Back

Acceleration

Front

A car driving at a constant speed of 30 miles an hour on a curve is an example of __________.

Back

46.6 mi/hr

Front

A truck travels between two cities according to the distance-time graph. What is the trucks average speed for the first hour and half?

Back

least

Front

Position 3 in the diagram has the _____ potential energy.

Back

500 J

Front

If the ride has 800J of potential energy at the top. How much potential energy will it have at the 50-meter mark?

Back

Third Law of Motion

Front

When a bullet is shot out of the barrel the reaction force pushes the person back. This is an example of the ____.

Back

Chemical into electrical into light

Front

What's the energy transformation occurring in the picture?

Back

20 N and will accelerate to the left

Front

The cylinder is stationary and has a pair a forces acting on it. What is the net force and state of motion?

Back

Kinetic energy

Front

It is due to motion and is based on speed of an object

Back

Energy

Front

The ability to do work and is measured in Joules (J)

Back

0 N and will remain at rest

Front

The cylinder is stationary and has a pair of forces acting on it. What is the net force and state of motion?

Back

2.5 m/s/s

Front

If a force of 25 N pushes on a 10 g ball, what will be its acceleration?

Back

Potential energy

Front

It is stored and is based on the position of an object

Back

40 m

Front

At what height would the potential and kinetic energy be the same?

Back

Potential into Kinetic

Front

Before an earthquake, energy builds up at transform boundaries until there is a sudden movement of the Earth which creates an earthquake. What's the energy transformation that occurred?

Back

least kinetic energy

Front

Picture A has the _______________.

Back

Unbalanced forces

Front

Causes acceleration

Back

2500 N

Front

What is the force needed to accelerate a 100 g ball at 25 m/s/s

Back

greatest kinetic energy

Front

Position X has the ___________________.

Back

20 N and it will accelerate

Front

The cylinder is moving at 2 m/s down the ramp when the forces pictured acted on it. What is the net force and state of motion?

Back

Speed

Front

A car driving at 60 miles per hour is an example of _____.

Back

0 N at a constant speed

Front

The cylinder shown is moving at 2 m/s down the ramp when the forces pictured acted on it. What is the net force and state of motion?

Back

600 J

Front

How much work is being done by the machine carrying a 300 Kg box 2 meters to the closet?

Back

Force

Front

A push or pull that is measured in Newtons (N)

Back

Second Law of Motion

Front

Applying a greater force to an object will increase the object's acceleration. This is an example of the _____.

Back

Chemical into heat into mechanical into electrical into light

Front

What's the energy transformation occurring in the picture?

Back

3 g

Front

What is the mass of an object that is accelerating at 50 m/s/s due to a force of 150 N?

Back

inertia

Front

The first law of motion says that an object keeps moving unless acted by an unbalanced force. The guy in the picture demonstrates this because he has _____.

Back

64 km/hr

Front

What's the average speed throughout Jane's journey?

Back

Balanced forces

Front

Do not cause changes in motion

Back

2 mi/hr

Front

An ant can travel 5 miles in two and half hours. What is the ant's speed?

Back

Velocity

Front

A car driving at 60 miles an hour North is an example of ______.

Back

Net Force

Front

The total of all the forces acting on an object is _____.

Back

Law of Conservation of Energy

Front

States that energy cannot be created nor destroyed

Back

First Law of Motion

Front

The pin falls straight down when you hit the card. This is an example of the _________.

Back

1500 J

Front

How much work is being done by the teacher applying 300 N of force to move a box 5 meters across the room?

Back

2 g

Front

If a box is being pushed with 200 N of force and its acceleration is 100 m/s/s, what is its mass?

Back

0 J

Front

How much work is being done by a student holding their books that weigh 1.3 Kg as they wait in line to get into class?

Back

greatest

Front

Position 1 in the diagram has the _____ potential energy.

Back

Potential into mechanical into electrical

Front

What's the energy transformation occurring in the picture?

Back

2 m/s/s

Front

What is the acceleration of a 75 g box being pushed with 150 N of force?

Back

250 N

Front

If a 50 g ball is accelerating with 5m/s/s, what force acted on it?

Back

63 km/hr

Front

A car travels in segments that are described in the table. What is the speed of the car?

Back