Forces and Motion--5th Grade

Front

What is a balanced force?

Back

A balanced force occurs when two forces acting on an object are equal in size but opposite in direction, resulting in no change in motion.

Front

What is an unbalanced force?

Back

An unbalanced force occurs when two forces acting on an object are not equal, causing the object to accelerate in the direction of the stronger force.

Front

What is gravity?

Back

Gravity is the force that pulls objects toward the Earth, giving them weight.

Front

How do you calculate speed?

Back

Speed can be calculated by dividing the distance traveled by the time taken (Speed = Distance/Time).

Front

If a swimmer moves at 2.0 meters/second, how long will it take to swim 100 meters?

Back

It will take 50 seconds.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object, caused by the contact between two surfaces.

Front

What is acceleration?

Back

Acceleration is the rate at which an object changes its velocity, which can be an increase or decrease in speed.

Front

What is the formula for calculating acceleration?

Back

Acceleration = (Final Velocity - Initial Velocity) / Time.

Front

If John walks 5 km in 10 minutes, what is his speed?

Back

His speed is 30 km/h.

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity (Momentum = Mass x Velocity).