To solve this problem it is necessary to apply the concepts related to the centripetal force, the force of gravity that produces the weight and the balance of these two. So that the car does not lose contact with the floor, the force of the weight must be equal to the centripetal force therefore
Here,
m = mass
v =Velocity
R = Radius
Rearranging to find the velocity
Replacing,
Therefore the maximum speed that can the car have without flying off the road at the top of the hill is 22.136m/s
Answer:
Explanation:
1 ) The superball which bounces back with the same velocity will be more effective at closing the door . It creates greater impulse on the door because it creates more change in momentum .
2 ) The final momentum of the clay ball will be zero because its velocity after collision will be zero.
3 ) The area of force - time graph gives the value of impulse.
4 ) When the collision is made on a perfect spring , it becomes perfectly elastic . In this case the velocity of recoil is same as that before the collision . So there is no loss of energy in the collision.
5 ) The change in momentum will give the value of impulse. Since we can calculate the velocity before and after the collision , we can calculate the value of impulse. If m be the mass and v be the value of velocity before the collision
impulse = change in momentum
= m v - ( - mv )
= 2m v.
Answer. Answer: answer is 1.25 seconds. 15 ÷ 12 = 1.25 sec.
Answer:
-0.209 kg.m/s
Explanation:
The mass of the ball, m = 275g or 0.275 kg
Speed or velocity, v = 2.60 m/s
Momentum, P = mv
Momentum when velocity is 2.60 = 0.275 x 2.60 = 0.715 kg.m/s
Speed or velocity, v = 1.84 m/s
Momentum, P = mv
Momentum when velocity is 1.84= 0.275 x 1.84 = 0.506 kg.m/s
Change in magnitude = 0.506 - 0.715 = -0.209 kg.m/s