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3 years ago

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

2 answers:

4 0

The formula of the kinetic energy is:
K.E = $\frac{1}{2}$ mv²

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

Plug them in:

100 = $\frac{1}{2}$ m × (5)²
100 = $\frac{1}{2}$ m × 25
100 = 12.5m
Divide by 12.5 on either sides to isolate m

$\frac{100}{12.5}$ = $\frac{12.5m}{12.5}$
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

Liono4ka [1.6K]3 years ago

3 0

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 = $\frac{1}{2}m v^{2}$ .

Where m = mass , v = velocity.

Plugging the values

100 = $\frac{1}{2}m (5)^{2}$ .

100 = $\frac{1}{2}m 25$ .

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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Two integers a and b have a product of -33. What is the least possible sum of a and b

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<h2>The least possible sum of a and b is -32</h2>

to 1) and to 5)

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