Calculate the kinetic energy of a car of mass 750kg moving with a velocity of 54km/h.find the new kinetic energy of a car if passenger of mass 50 kg sits in the car
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Answered by
27
using
kinetic energy= 1/2×m×v^2
mass =750 kg
v=54 km/hr
for mass 750
K.E=1/2×m×v^2
K.E=1/2×750×54×54
K.E= 1093500 joule
for mass 750kg+ 50kg wt. of passenger
K.E.=1/2×800×54×54
K.E=1166400 joule
kinetic energy= 1/2×m×v^2
mass =750 kg
v=54 km/hr
for mass 750
K.E=1/2×m×v^2
K.E=1/2×750×54×54
K.E= 1093500 joule
for mass 750kg+ 50kg wt. of passenger
K.E.=1/2×800×54×54
K.E=1166400 joule
Answered by
23
Answer:
Explanation:kinetic energy = 1/2 x m x v^2
Mass = 750 kg
Velocity = 54 km/h
KE = 1/2 x 750 x 54 x 54
= 1093500 J
Mass = 750 + 50 = 800kg
Velocity = 54km/h
KE = 1/2 x 800 x 54 x 54
= 1166400 J
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