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3 years ago

Pls help I have to submit it

Physics

1 answer:

mihalych1998 [28]3 years ago

7 0

Answer:

Acceleration =

$2 \: ms {}^{ - 2}$

Explanation:

Acceleration =

$\frac{change \: in \: velocity }{time}$

=》

$\frac{21 - 15}{3}$

=》

$\frac{6}{3}$

=》

$2$

hence, acceleration =

$2 \: ms {}^{ - 2}$

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3 years ago

Consider a situation where a constant force of 25 N acts on an object having a mass of 2 kg for 3 seconds. What is the work done

blagie [28]

Answer:

Work done W =1406.25 J

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3 years ago

A railroad freight car, mass 15,000 kg, is allowed to coast along a level track at a speed of 2.0 m/s. It collides and couples w

gayaneshka [121]

Answer:

The speed of the two cars after coupling is 0.46 m/s.

Explanation:

It is given that,

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$V=\dfrac{m_1u_1+m_2u_2}{(m_1+m_2)}$

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3 0

3 years ago

Pls help I have to submit it​

Pls help I have to submit it