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3 years ago

A 7.00- kg bowling ball moves at 3.00 m/s. How fast musta

Physics

1 answer:

ratelena [41]3 years ago

6 0

Answer:

Ping Pong ball move at velocity 160.4 m/s

Explanation:

given data

mass m1 = 7 kg

velocity v1 = 3 m/s

mas m2 = 2.45 g = 2.45 × $10^{-3}$ kg

same kinetic energy

to find out

How fast Ping Pong ball move (v2)

solution

we know same KE

$\frac{1}{2}* m1* v1^{2} = \frac{1}{2}* m2* v2^{2}$ ...........1

so v2 will be

v2 = $\sqrt{\frac{m1*v1^2}{m2} }$ .............2

put here value in equation 2 we get v2

v2 = $\sqrt{\frac{7*3^2}{2.45*10^{-3}}}$

v2 = 160.4

so Ping Pong ball move at velocity 160.4 m/s

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3 years ago

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3 years ago

Jerry the mouse is running along a straight desert road at a constant velocity of 18 m/s. If a certain Tom cat wants to capture

Kruka [31]

Answer:

a) t = 1.75 s

b) x = 31.5 m

Explanation:

a) The time at which Tom should drop the net can be found using the following equation:

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b) We can find the distance at which is Jerry when Tom drops the net as follows:

$v = \frac{x}{t}$

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3 years ago

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4 years ago

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Paladinen [302]

Answer:

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<u>Friction Force</u>

When objects are in contact with other objects or rough surfaces, the friction forces appear when we try to move them with respect to each other. The friction forces always have a direction opposite to the intended motion, i.e. if the object is pushed to the right, the friction force is exerted to the left.

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