What force will change the velocity of a body of mass 2kg from 20m/s to 40 m/s in 4s? * (1 Point) 1. 10 N 2. 30 N 3. 40 N 4. 5N
Answers
Answered by
0
Answer:
5N
Explanation:
From newton's second law,F=dtdP
dP= d(mv)
So, required force F=21(30−20)N
so F=5N
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Answered by
0
Explanation:
Let's solve this,
Given,
Mass=2kg
change in velocity(40-20)= 20m/s
Time= 4sec
Force=?
As we know,
a=(change in velocity)/time
a=20/4
a=5m/s²
Now again, we know,
Force = m.a
= 2× 5
=10N
so, the correct option is 1)
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