Answer: Mass of car is 2660kg
Explanation:
Use equation for Kinetic ene)rgy :
Ek=(m*V²)/2
from this eqation you can get mass
m*V²=Ek*2
m=Ek*2/v²
Ek=5.32*100000J
V=20m/s
m=?
m=2*5.32*100000J/(20m/s)²
m=2660kg or 2.66t
Neptune was named after the Roman god of the sea and it is the last known of the planets
The momentum of a moving object is given by:
where m is the mass of the object and v its speed.
In this problem, the ball has a mass of
and its momentum is
, so we can rearrange the previous equation to find the speed of the ball:
Answer:
Fgparallel = 170N
Explanation:
Acting down the incline would be the paralell force. The Force of gravity on an incline for the parallel portion is mgsinθ.
Fg parallel = mgsinθ
mg is 289.9, as that is the weight. θ is 35.9
Fgpar = 289.9sin35.9
Fgparallel = 170N
Explanation:
that's impossible,the radius of the earth can't decrease when the mass doubles!
