Freshman Physics Kinematics

What is the equation for average velocity?

• average velocity = (final position + initial position) / (final time + initial time)

• average velocity = (final position - initial position) / (final time - initial time)

• average velocity = (final time - initial time) / (final position - initial position)

• average velocity = (initial position - final position) / (initial time - final time)

Define acceleration.

• Acceleration is the distance traveled per unit time.

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

• Acceleration is the speed of an object.

• Acceleration is the force acting on an object.

A car accelerates uniformly from rest to a speed of 25 m/s in 10 seconds. What is its acceleration?

• 5 m/s^2

• 2.5 m/s^2

• 3 m/s^2

• 1.5 m/s^2

What is the formula for displacement in terms of initial velocity, acceleration, and time?

• displacement = initial velocity * time - 0.5 * acceleration * time^2

• displacement = initial velocity / time + acceleration * time

• displacement = initial velocity + acceleration * time

• displacement = initial velocity * time + 0.5 * acceleration * time^2

Explain the difference between speed and velocity.

• Velocity is the rate of change of position.

• Speed is the magnitude of velocity.

• Speed is a vector quantity.

• Velocity is a scalar quantity.

A ball is thrown vertically upwards. What is the acceleration at the highest point?

• 5 m/s^2

• 2 m/s^2

• -9.81 m/s^2

• 0 m/s^2

What is the equation for final velocity in terms of initial velocity, acceleration, and displacement?

• v^2 = u^2 + 2as

• v = u + 2as

• v = u + as

• v = u + at

What is the area under a velocity-time graph represent?

• Displacement of an object

• Speed of an object

• Time elapsed

• Acceleration of an object

A train starts from rest and accelerates at 2 m/s^2 for 10 seconds. What is its final velocity?

• 30 m/s

• 25 m/s

• 20 m/s

• 15 m/s

What is the equation for acceleration?

• a = (v_f * v_i) / t

• a = (v_f + v_i) / t

• a = (v_f - v_i) / t

• a = (v_f - v_i) * t