You observe three carts moving to the right. cart a moves to the right at nearly constant speed. cart b moves to the right, grad
1 answer:
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Answer:
The final velocity of the cars is 8.38 m/s at an angle 39.1° south of west.
Explanation:
Given that,
Mass of first car = 1100 kg
Velocity of first car = 8.5 m/s
Mass of second car = 650 kg
Velocity of second car = 17.5 m/s
Suppose we need to find the final velocity of the cars and direction of the cars.
We need to calculate the velocity of the car in west direction
Using conservation of momentum in west direction
Put the value into the formula
We need to calculate the velocity of the car in south direction
Using conservation of momentum in south direction
Put the value into the formula
We need to calculate the final velocity of the cars
Using formula of velocity
We need to calculate the direction
Using formula of direction
Put the value into the formula
Hence, The final velocity of the cars is 8.38 m/s at an angle 39.1° south of west.
Answer:
Explanation:
The acceleration of an object is given by:
where
v is the final velocity
u is the initial velocity
t is the time interval it takes for the velocity to change from u to v
For the rocket in this problem,
u = 20,000 m/s
v = 24,000 m/s
t = 55.0 - 5.0 = 50.0 s
Substituting,