The document discusses momentum and how to calculate it using the formula momentum (p) equals mass (m) multiplied by velocity (v). It provides examples of calculating momentum for various objects with different masses and velocities, such as a trolley, car, and lorry. It also asks questions about determining momentum and which object has the least momentum based on given mass and velocity values.

1. MOMENTUM

2. •Every moving object has
momentum.
•When an object moving in a
straight line, it has linear
momentum.
•The momentum of lorry is
bigger than the car, even they
move at the same speed.

3. • Momentum of an object is defined
as the product of its mass and its
velocity
Momentum = Mass x Velocity

4. Formula of momentum;
mvp 
velocityv
massm
momentump




6. Where is the mass???
Where is the velocity???

7. How to calculate the momentum of
the trolley?
3 kg
3 m/s
Insert the information into the formula:
p = 3 ms⁻¹ x 3 kg = 9 kgms⁻¹
What is the formula of momentum?
p = m x v
List all the information given:
v = 3 ms⁻¹ m = 3 kg

8. •A car of mass 800 kg is moving at a
velocity of 50 ms-1 . The momentum of
the car is….
Insert the information into formula
p = 800 kg X 50 ms⁻¹ = ??
How to calculate the momentum??
p = m x v
List all the information
Mass of car = 800kg Velocity = 50 ms⁻¹

9. A lorry moves with velocity 55ms-1.
Given that momentum of the lorry is
286000kgms-1. Find the mass of the lorry.
Insert the information into formula
286000 kgms⁻¹ = m x 55ms⁻¹ ; m = 5200 kg
How to calculate the mass using the formula??
p = m x v
List the information given
Velocity = 55 ms⁻¹ Momentum= 286000 kgms⁻¹

10. Exercise……..

11. The figure above shows two objects A and
B of masses 3 kg and 2 kg respectively
moving towards each other. Find the
momentum of object A and object B.

13. A ball of mass 0.5 kg hits a wall with a
velocity of 10 ms-1 and bounces back with
a velocity of 5 ms-1. Calculate the change
of momentum of the ball.

14. Which object has the least momentum?
1. Object A: m = 1 kg, v = 100 m/s
2. Object B: m = 10 kg, v = 12 m/s
3. Object C: m = 0.5 kg, v = 1000 m/s
4. Object D: m = 100 kg, v = 2 m/s

15. A car moves 200m in 4s. Given that the
mass of the toy car is 600kg. Find the
momentum of the car.

16. If a lorry reduces its mass by two times
but increase its velocity by two times, its
momentum
A. decrease by two
times
B. increase by two times
C. increase by four times
D. remain unchanged

17. MOMENTUM