Download presentation

Presentation is loading. Please wait.

Published byYvonne Masker Modified over 3 years ago

2
Learning Tweet Units of momentum (change in momentum) = kgm/s Change in momentum depends on the size of the force and the time it acts Change in momentum = resultant force (N) x time (s)

3
Unscramble the words & make two sentences NCEDSTI EMIT ELVICYT HAGPR EPEDS CELECATNIOAR

4
DISTANCE TIME VELOCITY GRAPH SPEED ACCELERATION

5
Momentum answers 1 A – football = 12.5 kg m/s Tennis ball leaving racquet = 3kg m/s Golf ball = 2.05 kg m/s B Car = 22000 kg m/s Lorry = 130 000 kg m/s Van = 77500 kg m/s C sprinter = 500 kg m/s Dog = 120 kg m/s Cyclist = 910 kg m/s

6
Momentum answers 2 1 a5000 kg m/s b31 600 kg m/s c720 000 kg m/s d480 000kg m/s 2 1.8 x10 29 kg m/s 3 31.6 m/s (about 70 mph )

7
Momentum answers 3 1 A23000 kg m/s B- 5400 kg m/s 2 A9 kg m/s B -9kg m/s C 18 kg m/s

8
Change in momentum Momentum = Mass x velocity Force x time (during which the force acts) = change in momentum

9
Problems A snooker cue hits a ball. The ball has a mass of 0.17 kg and starts moving with a velocity of 1.4m/s. A What is the momentum of the ball Momentum = 0.17 x 1.4 = 0.238 kg m/s B The contact between the cue and the ball lasts for 0.1s. What is the average force exerted on the cue ball during this time? F x t = change in momentum F= change in mom/time = 0.238/0.1 = 2.38 N

10
Problems (2) A motorcycle with a mass 200kg has a rider with a mass 50kg. It is travelling at 27 m/s (60 mph) a What is the momentum of motorcycle & rider b What braking force is needed to bring the motorcycle and rider to stop in 5s?

11
Problems (3) A car (mass 1025kg) has collided with a brick wall. It was travelling at 23m/s(50mph) What was the momentum of the car The accident investigator estimated that it took 1.8s to stop. What average force was exerted on the car during the collision.

Similar presentations

OK

6.1. 6.2 6.3 6.4 Inertia, momentum 6.5 (mv) = F t MomentumImpulse (Ft)

6.1. 6.2 6.3 6.4 Inertia, momentum 6.5 (mv) = F t MomentumImpulse (Ft)

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on time response analysis in control Ppt on railway track engineering Appt only ph clinics Ppt on ancient greek clothing Ppt on job satisfaction Ppt on dry fish processing Ppt on hindu religion gods Ppt on right to education in india Ppt on pricing policy for services Download ppt on social media marketing