Kinematics

Question 1

Wherever you see ‘Maximum Height’

Answer 1

Final velocity, v = 0

Question 2

Velocity

Answer 2

Change in displacement / Time

Question 3

Acceleration

Answer 3

Change in velocity / Time

Question 4

1st equation of motion

Answer 4

v = u + at

Question 5

2nd equation of motion

Answer 5

s = ut + 1/2at^2

Question 6

3rd equation of motion

Answer 6

v^2 = u^2n + 2as

Question 7

Time taken to reach maximum height

Answer 7

u sin @ / g

Question 8

Time of flight

Answer 8

2 u sin @ / g

Question 9

Range (Maximum horizontal distance)?

Answer 9

R = u^2 sin 2@ / g

Question 10

What is the range?

Answer 10

Maximum horizontal distance

Question 11

Maximum height?

Answer 11

H = u^2 sin^2 @ / 2g

Question 12

What is Newton’s second law of motion?

Answer 12

If the net force acting on a body is not zero, it accelerates in the direction of the net force.

Question 13

What is Newton’s third law of motion?

Answer 13

Whenever two bodies interact, the forces they exert on each other are always in magnitude and opposite in direction.

Question 14

Impulse

Answer 14

Force x Time

Question 15

Momentum

Answer 15

Mass x Velocity

Question 16

State the law of conservation of momentum

Answer 16

It states that the total momentum of colliding bodies before impact is equal to the total momentum after, provided that there were no external forces acting on the system of colliding bodies.

Question 17

When is collision said to be elastic?

Answer 17

It is elastic when there is no energy lost after collision and the kinetic energy remains the same.

Question 18

When is collision said to be inelastic?

Answer 18

It is inelastic when there is no energy lost after collision and the kinetic energy changes.