What is the mass of a baseball that has a kinetic energy of 100 J and is traveling at 5 m/s?

Answers

Answer 1

Answer: The formula of the kinetic energy is:
K.E = $(1)/(2)$ mv²

The given are
K.E = 100 J
v = 5 m/s

Plug them in:

100 = $(1)/(2)$ m × (5)²
100 = $(1)/(2)$ m × 25
100 = 12.5m
Divide by 12.5 on either sides to isolate m

$(100)/(12.5)$ = $(12.5m)/(12.5)$
12.5 and 12.5 cancels out
8 kg = m
The mass of the baseball that has a kinetic energy of 100 J and speed of 5 m/s is 8 kg

Answer 2

Answer:

Answer:

mass = 8 kg.

Step-by-step explanation:

Given : kinetic energy of 100 J and is traveling at 5 m/s?

To find : What is the mass of a baseball.

Solution : We have given

Kinetic energy = 100 J.

Velocity = 5 m/s.

Kinetic energy = $(1)/(2)m v^(2)$ .

Where m = mass , v = velocity.

Plugging the values

100 = $(1)/(2)m (5)^(2)$ .

100 = $(1)/(2)m 25$ .

On multipkying both sides by 2

200 = 25 m

On dividing both sides by 25

mass = 8 kg.

Therefore, mass = 8 kg.

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