Answer:
Explanation:
Initial kinetic energy of the system = 1/2 mA v0²
If Vf be the final velocity of both the carts
applying conservation of momentum
final velocity
Vf = mAvo / ( mA +mB)
kinetic energy ( final ) = 1/2 (mA +mB)mA²vo² / ( mA +mB)²
= mA²vo² / 2( mA +mB)
Given 1/2 mA v0² / mA²vo² / 2( mA +mB) = 6
mA v0² x ( mA +mB) / mA²vo² = 6
( mA +mB) / mA = 6
mA + mB = 6 mA
5 mA = mB
mB / mA = 5 .
Answer:
I don't understand what exactly you're asking, but this statement is true.
Explanation:
Answer:
It is the depth of the water that allowed it to be like day
Explanation:
what we see abovewater is not the actual thing or ssize we would see when insife the water
F = 10 N
d = 20 m
θ = 0°
W = F (dot product) D = F * D * cos(angle between them)
W = FDcosθ
W = 10 * 20 * cos0 = 200 J
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
