If you fwish to reduce the stress on high speed tires would you use large or small diameter tires ?
1 answer:
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Answer:
The velocity of the truck after this elastic collision is 15.7 m/s
Explanation:
It is given that,
Mass of the car,
Mass of the truck,
Initial velocity of the car,
Initial velocity of the truck, u₂ = 0
After the collision the velocity of the car is, v₁ = -11 m/s
Let v₂ is the velocity of the truck after this elastic collision. Using the conservation of momentum as :
So, the velocity of the truck after this elastic collision is 15.7 m/s. Hence, the correct option is (c).
Answer:
W = 30 J
Explanation:
given,
Work done = 10 J
Stretch of spring, x = 0.1 m
We know,
dW = F .dx
we know, F = k x
k = 2000
now, calculating Work done by the spring when it stretched to 0.2 m from 0.1 m.
W = 1000 x 0.03
W = 30 J
Hence, work done is equal to 30 J.