Tuktuki paddles her bicycle of mass 10 kg to attain velocity 6m/s in 30s. Then she applies brakes that the velocity of bicycle come down to 4m/s in next 5s find (a) force applied by the brakes.
Answers
Answered by
0
4 N is the right answer
u=6
v=4
t= 5
m= 10
a= v-u/t
F = ma
hope this help you
u=6
v=4
t= 5
m= 10
a= v-u/t
F = ma
hope this help you
Answered by
1
by using the formula:-
v=u+at
substituting the values in formula
4=6+(-a)5.....'-a' because the there is retardation
5a=6-4
5a=2
a=2/5
a=0.4m/s^2
by finding acceleration we can find force by using the formula
force=mass× acceleration
force=10×0.4
force=4Newton
therefore force applied by the brakes is 4N
v=u+at
substituting the values in formula
4=6+(-a)5.....'-a' because the there is retardation
5a=6-4
5a=2
a=2/5
a=0.4m/s^2
by finding acceleration we can find force by using the formula
force=mass× acceleration
force=10×0.4
force=4Newton
therefore force applied by the brakes is 4N
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