Question

a body moving along a straight line at 20 m/s undergoes an acceleration of -4 m/s^2. after two seconds its speed will be​

Answer 1

Answer:

heyy mate here is your answer see in this attachment

Answer 2

Answer:

u=20m/s , a=-4m/s^2 , t=2s , v=?

therefore, we know,

v= u+at

= 20-4×2

= 12 m/s

Step-by-step explanation:

Therefore after 2s the speed of the body must be reduced to 12m/s

I hope this helps you

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