Question

21. A body of mass 10 g is acted on by a force of 20 Dyne. The magnitude of acceleration will bea) 4 cm/s2 b) 2 cm/s2

c) 6 cm/s2 d) 10 cm/s2 ​

Answer 1

Answer:

Correct option is

B

100 kg-m/s

F=10N,m=20kg,t=10s

a=

m

F

=

20

10

=0.5m/s

2

v=u+at=0+0.5×10=5m/s

Change in momentum =m(v−u)=20(5−0)=100kgm/s

Answer 2

Answer:

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