The correct answer should be bounced off since the light ray hit the surface and reflected towards a new location. It therefore bounced off.
<span>action is the one car hitting the other, reaction is the other car being pushed away</span>
Hearing test provides an evaluation of the sensitivity of a person's sense of hearing and is most often performed by an audiologist using an audiometer. An audiometer is used to determine a person's hearing sensitivity at different frequencies.
Answer:
When he weight of the car is 8.55 x 
N then power = 314.012 KW
When he weight of the car is 1.10 x 
N then power = 43.76 KW
Explanation:
Given that
Initial velocity 
= 0
Final velocity 
= 24.8 
Time = 7.88 sec
We know that power required to accelerate the car is given by
P = 
Change in kinetic energy Δ K.E = 
Since Initial velocity = 0
⇒ Δ K.E = 
⇒ Power P = 
⇒ Power P = 
-------- (1)
(a). The weight of the car is 8.55 x N = 8550 N
Put all the values in above formula
So power P = 
P = 314.012 KW
(b). The weight of the car is 1.10 x N = 11000 N
Put all the values in equation (1) we get
P = 
P = 43.76 KW
Average speed = (distance covered) / (time to cover the distance)
= (20 miles) / (45 minutes)
Multiply that fraction by (60 minutes / 1 hour) .
This is equal to ' 1 ', so you won't change anything except the units.
= (20 miles / 45 minutes) times (60 minutes / 1 hour)
Multiply the fractions, then cancel 'minutes' out of
the numerator and denominator.
= (20 miles x 60) / (45 x 1 hour)
= (20 x 60 / 45) miles/hour
= 26-2/3 miles/hour .
