Kinematics

Question 1

Define displacement, velocity, and acceleration.

Answer 1

Displacement is the change in position, velocity is the rate of change of displacement, and acceleration is the rate of change of velocity.

Question 2

Write the equation for average velocity.

Answer 2

Average velocity = Total displacement / Total time.

Question 3

List the five SUVAT equations.

Answer 3

1) v = u + at,
2) s = ut + 0.5at²,
3) s = vt − 0.5at²,
4) v² = u² + 2as,
5) s = (u + v)/2 × t.

Question 4

What assumptions are made in the SUVAT equations?

Answer 4

The SUVAT equations assume constant acceleration and linear (straight-line) motion.

Question 5

Explain projectile motion.

Answer 5

Projectile motion is the two-dimensional motion of an object subject only to gravity, with a constant horizontal velocity and a vertically accelerated motion.

Question 6

How is the maximum height in projectile motion determined?

Answer 6

The maximum height is reached when the vertical component of the velocity becomes zero; you can use v² = u² + 2as with v = 0.

Question 7

What role do graphs play in analyzing motion?

Answer 7

Graphs such as displacement-time, velocity-time, and acceleration-time help visualize motion, determine slopes, and calculate areas to extract physical quantities.

Question 8

How is acceleration calculated from a velocity-time graph?

Answer 8

Acceleration is given by the slope of the velocity-time graph.