Work Energy And Momentum

Question 0

Work done on an object if calculated by

Answer 0

Work done = force multiplied by distance

Question 1

Work and energy what is the unit

Answer 1

Joule j

Question 2

Energy transferred =

Answer 2

Work done

Question 3

What’s the work done on a object if a force of 300N moves it a distance of 8m

Answer 3

300 multiplied by 8 = 2400J

Question 4

Gravitational potential energy

Answer 4

Is energy stored in an object because of its position in earths gravitational field

Question 5

Power

Answer 5

Rate of transfer energy

Question 6

Kinetic energy

Answer 6

Moving objects have it

Question 7

Momentum

Answer 7

All moving objects have it

Question 8

Unit of momentum

Answer 8

Kg m/a

Question 9

Momentum has two things

Answer 9

Size and direction

Question 10

Impact time

Answer 10

Duration of impact

Question 11

How do crumple zones on a car work

Answer 11

By reducing forces acting by increasing the time taken to change the momentum

Question 12

Seat belts and air bags do what

Answer 12

Spread the force across the chest also increase impact time