According to Newton's first law of motion, an object maintains its state unless a force acts on it. Therefore, a moving car does not change its direction and keeps its speed unless a force acts on it.

3 0

3 years ago

a 10 kg block is attached to a light chord that is wrapped around the pulley of an electric motor. at what rate is the motor doi

defon

Answer:

The rate of work is 360 W

Explanation:

Given:

Speed of block $v = 3 \frac{m}{s}$

Upward acceleration of block $a = 2 \frac{m}{s^{2} }$

Mass of block $m = 10$ kg

First Find the force act on block due to gravity

$F = M (a + g)$

Where $g = 10 \frac{m}{s^{2} }$

$F = 10 \times (10+2)$

$F = 120$ N

For finding at what rate motor doing work when it is pulling the block upward,

$P = F.v$

$P = 120 \times 3$

$P = 360$ W

Therefore, the rate of work is 360 W

6 0

4 years ago

a meter stick is hung from a string tied at the 25cm mark. A 0.50-kg object is hung From the zero end of the meter stick, and th

Vesna [10]

Impossible to determine

6 0

4 years ago

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Please need help on this

almond37 [142]

NEED HELP WITH WHAT DONT SEEQUESTION

4 0

3 years ago

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