4, 5, 6 Motion Flashcard

Front

What is a force?

Back

A force is a push or pull on an object.

Front

Which of the following is NOT using a force? A man pushing a shopping cart, A dog playing tug-of-war with a rope, A cat sleeping on the couch, An eagle carrying a fish it caught.

Back

A cat sleeping on the couch.

Front

What force causes the moon to revolve around the Earth?

Back

Earth's gravity.

Front

What is work in physics?

Back

Work is the force needed to move an object.

Front

Which is an example of work? Reading your science book, Riding in the car, Pushing a car that won't move, Pushing a cart through the store.

Back

Pushing a cart through the store.

Front

What does it mean if a car is moving at a constant speed?

Back

The forces acting on the car are balanced.

Front

What happens to an object when unbalanced forces act on it?

Back

The object will accelerate in the direction of the net force.

Front

What is gravity?

Back

Gravity is a force that pulls objects toward each other.

Front

What is the direction of the force in a force diagram?

Back

The direction of the force is indicated by arrows in the diagram.

Front

What is an example of an unbalanced force?

Back

A soccer ball being kicked.