The velocity of an object with a mass of 5 kg is given by v(t)= 2 t^2 + 9 t . What is the impulse applied to the object at t= 7 ?
2 Answers
Mar 13, 2018
Explanation:
Step 1:
We know,
Putting
Step 2:
Now,
Assuming the object started from rest,
**Step 3: **
From (1) & (2),
Mar 13, 2018
Explanation:
Impulse is defined as change in momentum,i.e
Where,
Now,given velocity-time relationship is
So,
So,