in order to gain velocity of 12 m/s , how long should a force of 30 N be exerted on a body of mass 5 kg ?
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Answered by
43
Force = mass * acceleration by Newton's law.
acceleration a = 30 N / 5 kg = 6 m/s²
final velocity = v, initial velocity = u, time duration = t
we know from equations of dynamics/kinematics:
v = u + a t
t = (v - u) / a = 12 / 6 = 2 seconds.
acceleration a = 30 N / 5 kg = 6 m/s²
final velocity = v, initial velocity = u, time duration = t
we know from equations of dynamics/kinematics:
v = u + a t
t = (v - u) / a = 12 / 6 = 2 seconds.
Answered by
44
force = 30N
mass = 5kg
change in velocity = 12m/s
t = ?
force = mass * change in velocity / time
t = mass * change in velocity/ force
= 5 * 12 / 30 = 2 seconds
mass = 5kg
change in velocity = 12m/s
t = ?
force = mass * change in velocity / time
t = mass * change in velocity/ force
= 5 * 12 / 30 = 2 seconds
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