Kinematics

Front

What is Kinematics?

Back

Kinematics is the branch of physics that describes the motion of objects without considering the forces that cause the motion.

Front

What is the formula to calculate speed?

Back

S = d/t, where S is speed, d is distance, and t is time.

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

How do you calculate average velocity?

Back

Average velocity is calculated by dividing the total displacement by the total time taken.

Front

What is acceleration?

Back

Acceleration is the rate of change of velocity of an object with respect to time.

Front

What is the formula for acceleration?

Back

a = (v_f - v_i) / t, where a is acceleration, v_f is final velocity, v_i is initial velocity, and t is time.

Front

If a car slows down from +32 m/s to +8 m/s in 4 s, what is the acceleration?

Back

The acceleration is -6 m/s², indicating a decrease in speed.

Front

What is the unit of speed in the SI system?

Back

The unit of speed in the SI system is meters per second (m/s).

Front

What does a negative acceleration indicate?

Back

A negative acceleration indicates that an object is slowing down.

Front

If a cheetah travels 75 m in 3 s, what is her velocity?

Back

The velocity is 25 m/s.