Answer:
A
but it depends on the car
Explanation:
6m/s
v = sqrt of 2KE/m
Where:
KE = kinetic energy
m = mass of a body
v = velocity of a body
= sqrt of 2(72)/4
= sqrt of 144/4
= sqrt of 36
= 6m/s
5m
661.25, I believe!
KE = (1/2)(2.5)(23)^2
KE=(1.25)(529)
KE= 661.25
F = 3.98 kN
GIVEN DATA:
sides of box = 17 cm
pressure = 1 atm = 101325 N/m2
T2 = 378K
T1 = 278 K
final pressure can be calculate by using below relation
we know that
force = pressure * area
therefore force is