a uniform acceleration from the rest to 20 m/s in 8 seconds the mass of the car is 1000 kg calculate is acceleration of car, calculate minimum force needed to produce acceleration.
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here is your answer
given :
initial velocity (u) = 0
final velocity (v) = 20 m/s
time taken (t) = 8 seconds
mass (m) = 1000 kg
to find :
acceleration & force
solution :
by using first equation of motion
v = u+at
20 = 0+8a
a = 20/8 = 2.5 m/s^2
now,
as we know,
force = mass×acceleration
force = 1000×2.5
force = 2500 Newton
so, acceleration is 2.5 m/s^2 and force is 2500 Newton.
given :
initial velocity (u) = 0
final velocity (v) = 20 m/s
time taken (t) = 8 seconds
mass (m) = 1000 kg
to find :
acceleration & force
solution :
by using first equation of motion
v = u+at
20 = 0+8a
a = 20/8 = 2.5 m/s^2
now,
as we know,
force = mass×acceleration
force = 1000×2.5
force = 2500 Newton
so, acceleration is 2.5 m/s^2 and force is 2500 Newton.
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