Question

a hammer wieghing 2.5kg moving with a speed of 1m)s strikes the head of the nail driving it 10 cm into the wall. The acceleration during impact and the impulse imparted to wall will be respectively
a) -5m/s^2,2.5N s
b) -10m/S2, 5N s
c)-7.5m/s^2, 3.5 N s
this is a q of class 9
plz ans the impulse part !!​

Answer 1

Answer:

I don't ttttttt know

ask your teacher she can help you

Explanation:

o

Answer 2

Answer:

-5m/s^2,2.5N s

Explanation:

A hammer weighing 2.5 kg moving with a speed of 1 ms

−1

strikes the head of the nail driving it 10 cm into the nail wall. the acceleration during impact and the impulse imparted to wall will be respectively

MEDIUM

Help best friend

Study later

ANSWER

Mass=2.5kg

initial speed=1m/s

2

S=10cm=0.1m

By V²−u²=2as

$$0-1=2 \times a \times 0.1$$

−1=0.2×a

a=−1/0.2=−5m/s

2

Impulse= change in momentum=m(v−u)

=2.5[0−1]

=−2.5kgm/s

∴a=−5m/s

2

and impulse=−2.5Kgm/s=2.5Ns