Unit 2 Physics Speed

HideShow resource information
  • Created by: Sunset
  • Created on: 03-01-14 08:47
How is momentum calculated?
Mass x Velocity
1 of 18
What is the total momentum before and after an explosion?
0 Kgms-1
2 of 18
How is power calculated?
Work done (J) /Time taken (s)
3 of 18
What is the only factor that affects thinking distance and braking distance (stopping distances)?
Speed
4 of 18
How does speed affect braking distance?
If you double speed you quadruple braking distance
5 of 18
What are the two ways of calculating acceleration?
V-U/T or F/M
6 of 18
When using F=MA, what are the units of M?
Kg
7 of 18
What does Newtons First Law state?
An objects velocity remains constant until a resultant force acts on it
8 of 18
What is the resultant force: 17N to the left and 12N to the right?
5N left
9 of 18
What does the gradient on a V-T graph denote?
Acceleration
10 of 18
What does the gradient on a D-T graph denote?
Speed
11 of 18
What are the units of velocity?
ms-1
12 of 18
What are the units of acceleration
ms-2
13 of 18
How does a seatbelt improve car safety?
It lengthens the time taken for the persons velocity to reach 0 and the force is applied over a large surface area
14 of 18
If the spring constant is 2Nm-1 and a spring extends 6m, what force was applied?
12N
15 of 18
What is the law of conservation of mass?
Momentum Before = Momentum After
16 of 18
If a girl who weighs 15Kg runs 2m upstairs in 2s, what is her power?
150W (15 x 10 = 150N, 150 x 2 = 300J, 300/2 =150W)
17 of 18
What is the kinetics energy of a ball that is moving at 6ms-1 with a mass of 1kg?
18J
18 of 18

Other cards in this set

Card 2

Front

What is the total momentum before and after an explosion?

Back

0 Kgms-1

Card 3

Front

How is power calculated?

Back

Preview of the front of card 3

Card 4

Front

What is the only factor that affects thinking distance and braking distance (stopping distances)?

Back

Preview of the front of card 4

Card 5

Front

How does speed affect braking distance?

Back

Preview of the front of card 5
View more cards

Comments

No comments have yet been made

Similar Physics resources:

See all Physics resources »See all Forces and Motion resources »