Question

1. What is the Kinetic energy of a 1500 kg car going at a speed of 14 meters/second?

Show your work below

2. What is the KE if m = 2 and v = 5?

3. What is the KE if m = 4 and v = 5?

4. What is the KE if m = 2 and v = 10?

Answer 1

1.Kinetic energy =147000 joule

2.Kinetic energy =25 units

3.Kinetic energy =5 0 units

4.Kinetic energy = 200 units

Step-by-step explanation:

1.

Kinetic energy =
`(1)/(2) mv^(2)`

Here m = 1500 kg and v = 14 meter / second

Kinetic energy =
`(1)/(2) mv^(2)`=
`(1)/(2)* 1500 * 14^(2)` joule =147000 joule

2.

Here m = 2 unit and v = 5 units

Kinetic energy =
`(1)/(2) mv^(2)` =
`(1)/(2)* 2 * 5^(2)` units =25 units

3.

Here m= 2 units and v = 5 units

Kinetic energy =
`(1)/(2) mv^(2)` =
`(1)/(2)* 4 * 5^(2)`=5 0 units

4.

Here m= 2 units and v= 10 units

Kinetic energy =
`(1)/(2) mv^(2)`=
`(1)/(2)* 4 * 10^(2)`units = 200 units