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3 years ago

14

a rocket of mass 100,000 kg undergoes an acceleration of 2m/s2. show the net force acting on it is 200,000

1 answer:

just olya [345]3 years ago

6 0

M= 100000 kg
a= 2m/s²

Use Newton's second law:
F=ma=100000kg • 2 m/s²
= 200000 N

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3 years ago

A sprinter accelerates at 7.5 m/s from rest in 2.0 s, what distance did she go? (15 m)

a_sh-v [17]

Answer:

<em>The sprinter traveled a distance of 7.5 m</em>

Explanation:

<u>Motion With Constant Acceleration </u>

It's a type of motion in which the rate of change of the velocity of an object is constant.

The equation that rules the change of velocities is:

$v_f=v_o+at\qquad\qquad [1]$

Where:

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vf = final speed

t = time

The distance traveled by the object is given by:

$\displaystyle x=v_o.t+\frac{a.t^2}{2}\qquad\qquad [2]$

Using the equation [1] we can solve for a:

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$\displaystyle a=\frac{7.5-0}{2}$

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$\displaystyle x=0*2+\frac{3.75*2^2}{2}$

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3 years ago

Suppose you push a toy train with a force of 3 N east. The train has a mass of 0.5 kg. What is its acceleration?

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Answer:

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