Answer:
7 seconds
Explanation:
he went down -28 m/s so 7 times -4 equals -28 m/s which is what he needed to slowness down to 10 m/s
Answer:
The work done on an object arises from a force applied over a distance ... the frictional force on the tires is equal to the kinetic energy of the car, KE=1/2 ... As an example, consider an apple of mass m which is initially a height h above the ground. ... held motionless so that the initial mechanical energy is Etop = PEtop = mgh.
Explanation:
'B' is the correct choice.
BUT ... the angle of incidence is not the angle between the light ray
and the mirror. It's the angle between the light ray and the NORMAL
to the mirror. The 'normal' is the line that's perpendicular to the mirror.
Answer:
So heat required to raise the temperature of water is given as Q = 33472 J
Explanation:
As we know that the temperature of water is increased by 2 Degree C
So here we have heat gain by the water is given by the equation
Now we know that
m = 1000 g
s = 4.184 J/g C
Now plug in all data in above equation