Physics EXTRA

Front

What pulls a ball back to earth?

Back

Gravity is the force that attracts a body toward the center of the earth, or toward any other physical body having mass.

Front

What is the equation to calculate momentum?

Back

The equation for momentum (p) is p = mv, where m is mass and v is velocity.

Front

What type of energy is stored in a compressed spring?

Back

Elastic energy is the potential energy stored in an object when it is compressed or stretched.

Front

What happens to impact force during softer landings?

Back

Softer landings tend to increase collision time, which reduces the impact force experienced.

Front

If you drop a bowling ball and a tennis ball in a vacuum, which falls faster?

Back

They would both fall at the same speed due to the absence of air resistance.

Front

Define momentum in physics.

Back

Momentum is the quantity of motion an object has, calculated as the product of its mass and velocity (p = mv).

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated as PE = mgh.

Front

Explain the concept of kinetic energy.

Back

Kinetic energy is the energy of an object in motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the difference between elastic and inelastic collisions?

Back

In elastic collisions, both momentum and kinetic energy are conserved; in inelastic collisions, momentum is conserved but kinetic energy is not.