Semester 1 Exam Physics 2024

Front

What type of motion is represented by a graph showing constant velocity in the negative direction?

Back

Constant velocity in the negative direction means the object is moving at a steady speed in the opposite direction.

Front

Impulse is ______ the change in momentum.

Back

Equal to. Impulse is defined as the change in momentum of an object when a force is applied over time.

Front

What is the missing force when discussing forces acting on an object in contact with a surface?

Back

Normal force. The normal force acts perpendicular to the surface and supports the weight of the object.

Front

What is the purpose of crumple zones in cars?

Back

To increase the time of impact, which reduces the force experienced by the occupants during a collision.

Front

What does acceleration describe?

Back

Changes in velocity. Acceleration is the rate of change of velocity of an object.

Front

Define velocity.

Back

Velocity is the speed of an object in a specific direction.

Front

What is the relationship between force, mass, and acceleration?

Back

According to Newton's second law, Force = Mass x Acceleration.

Front

What is the formula for calculating momentum?

Back

Momentum = Mass x Velocity.

Front

What is the difference between speed and velocity?

Back

Speed is a scalar quantity that refers to how fast an object is moving, while velocity is a vector quantity that includes both speed and direction.

Front

What is the principle of conservation of momentum?

Back

In a closed system, the total momentum before an event is equal to the total momentum after the event.