Question

Matthew rolls a bowling ball with a speed of 2 meters/second. The ball hits the pins with 1.8 joules of kinetic energy. The mass of the bowling ball is __ kilograms.

Answer 1

The mass of the bowling ball is 0.9 kilograms

Step-by-step explanation:

Kinetic energy= 1.8 J

speed of bowling ball = 2 m/s

The formula for kinetic energy is given by KE = 1/ 2 mv²

1.8 = 1/2 (m) (2)²

m = 0.9 Kg

Answer 2

Answer : The mass of the bowling ball is 0.9 kilograms.

Solution : Given,

kinetic energy = 1.8 J

Velocity of an object = 2 m/s

Formula used for kinetic energy is,

`K.E=(1)/(2)m* v^2`

where,

K.E = kinetic energy

m = mass of an object

v = velocity of an object

Now put all the given values in the above formula, we get the mass of the bowling ball.

`(1.8J)=(1)/(2)m* (2m/s)^2`

`(1.8\text{ Kg }m^2s^(-2))=(1)/(2)m* (2m/s)^2`

`(1J=1\text{ Kg }m^2s^(-2))`

`m=0.9Kg`

Therefore, the mass of the bowling ball is 0.9 kilograms.