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3 years ago

The change in motion (acceleration) of an object depends on

Physics

1 answer:

7nadin3 [17]3 years ago

8 0

Answer:

BOTH the size of the force AND the mass of the object

Explanation:

Acceleration of an object is the rate of change of its velocity.

The relation between force, mass and acceleration is given by the formula as follows :

F = ma

m is mass

a is acceleration

It would mean that the change in motion or the acceleration of an object depends on both the size of the force and the mass of the object. Hence, the correct option is (c).

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Answer:

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3 years ago

A baseball has a mass of 0.15 kg and radius 3.7 cm. In a baseball game, a pitcher throws the ball with a substantial spin so tha

mylen [45]

Answer:

Rotational kinetic energy = 0.099 J

Translational kinetic energy = 200 J

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Explanation:

Rotational kinetic energy is given by

$\text{RKE} = \frac{1}{2}I\omega^2$

where I is the moment of inertia and ω is the angular speed.

For a solid sphere,

$I = \frac{2}{5}mr^2$

where m is its mass and r is its radius.

From the question,

ω = 49 rad/s

m = 0.15 kg

r = 3.7 cm = 0.037 m

$\text{RKE} = \frac{1}{2}\times \frac{2}{5} mr^2\omega^2 = \frac{1}{5} mr^2\omega^2$

$\text{RKE} = \frac{1}{5} (0.15\ \text{kg})(0.037\ \text{m})^2(49\ \text{rad/s})^2 = 0.099\text{ J}$

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$\text{TKE} = \frac{1}{2} mv^2$

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3 years ago

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Marcus drove his Honda Prelude for 4 hours at a rate of 55 miles per hour. How far did he travel?

galben [10]

To solve this, you’d multiply 55 by 4, because he is travelling 55 miles every hour, for four hours, which means 55 miles every hour. The answer would be 220.

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3 years ago

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Answer:

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Explanation:

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V = 10m/s

Work done = 1/2 * 66 * 10^2

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3 years ago

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Lubov Fominskaja [6]

Answer:

Explanation:

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