A car of mass 980.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 37.4 km/hr (10.4 m/s), the net power which the engine supplies is 5500.0 W (in addition to the extra power required to make up for air resistance and friction). Calculate the acceleration of the car at that time.

Acceleration will be equal to

Explanation:

We have given mass of the car m = 980 kg

Velocity of the car v = 37.4 km/hr = 10.4 m/sec

Power supplied by the engine P = 5500 watt

We know that power is rate of change of energy with respect to time

So

Energy is equal to energy = force × distance

So

From newtons second law force is equal to Force = mass × acceleration

So

So

c)as speed changes, wavelength and frequency change.

everything changes!

report!

explanation:

physics means: "the branch of science concerned with the nature and properties of matter and energy. the subject matter of physics, distinguished from that of chemistry and biology, includes mechanics, heat, light and other radiation, sound, electricity, magnetism, and the structure of atoms."