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☆☆☆☆☆Same P=MV
It depends on their initial speeds and masses. The speed can be worked out by: mcarucar + mtruckutruck = mbothvboth where u = initial veloicty m = mass v = final veloicty remember u and v are vectors so will have direction! So: 300 * 0 + 500 * 30 = (300 + 500) * v v = 30 * 500 / 800 = 18.75 or "19 m/sec" to two sig figs.
250 kg * m/s
The dnsity of a submerged submarine is the same as the density of the water if the density of the submarine was grater it will sink, if the density was less it would float.
to make a hot air balloon rise you use hot air
Forced air heating
An object falling at terminal velocity is moving at constant speed (that's what terminal velocity means) and we will assume it is not changing direction (i.e. it is falling straight down; in reality it is more likely to be bobbing and weaving on the wind.) Constant speed and direction is another way of saying constant velocity. when an object is acted upon by a net force, it's velocity changes. So, since we know that the velocity is not changing, there is no force.
A river speeds up when it moves into a narrower channel
It has variable acceleration
There is little mass to the bug compared to an automobile.
Different waves arrive at a point at the same time.
