Explanation:
the average velocity of the car is 15 m/s example I have this on a test
Answer:
Explanation:
This problem can be solved with the conservation of the momentum.
If the ball is fired upward, the momentum before and after the ball is fired must conserve. Hence, the speed of the ball is the same that the speed of the car just in the moment in wich the ball is fired.
Hence, the result depends of the acceleration of the car. If the change in the speed is higher than the speed of the ball, it is probably that the ball will be behind the car or it will come back to the car.
If the ball is fired forward, and if the change in the speed of the car is not enogh, the ball will be in front of the car.
HOPE THIS HELPS!!
Answer:
he longer ramp has more mechanical advantage for it requires less force to push up a mass while being over a longer period of time. Its called Mechanical Advantage because say you had to lift a car up 1-meter. you cannot simply pick it up, but over a long enough slope you would be able to because you can apply a small force over a longer distance
Explanation:
<h2>Arrows movment when magnet is Picked Up and Dropped many times.</h2>
If the magnet were picked up and dropped numerous times the arrows would point in a variety of directions. When the magnet is picked up then the arrow shows deflection in one point and when the magnet is dropped in the opposite direction. When it is picked up and dropped numerous times it will show deflection in many directions.
<span>The runner is moving by uniformly accelerated motion, starting from rest (so, his initial velocity is zero). The law of motion of the runner is
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where x(t) is the distance covered after time t, and a is the acceleration of the runner. By re-arranging the formula, we get
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We know the runner has covered a distance of S=12m in t=4.0 s, and if we plug these numbers into the equation, we find the acceleration of the runner:
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