During a storm, rain comes straight down with an initial velocity of vi=-14 m/s and hits the roof of a car perpendicularly (see Figure below). The mass of rain per second that strikes the car roof Raindrop ir = 0 m/s is 0.067 kg/s. Assuming that the rain comes to rest upon striking the car (final velocity, vf = O m/s), find the average force exerted by the rain on the roof.

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Chapter1: Units, Trigonometry. And Vectors
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During a storm, rain comes straight down with an initial velocity of vi=-14 m/s and hits the roof
of a car perpendicularly (see Figure below). The mass of rain per second that strikes the car roof
Raindrop
ir = 0 m/s
is 0.067 kg/s. Assuming that the rain comes to rest upon striking the car (final velocity, vf =
O m/s), find the average force exerted by the rain on the roof.
Transcribed Image Text:During a storm, rain comes straight down with an initial velocity of vi=-14 m/s and hits the roof of a car perpendicularly (see Figure below). The mass of rain per second that strikes the car roof Raindrop ir = 0 m/s is 0.067 kg/s. Assuming that the rain comes to rest upon striking the car (final velocity, vf = O m/s), find the average force exerted by the rain on the roof.
The figure below illustrates an elastic head-on collision between two balls. Ball 1 has a mass
of m1 = 0.251 kg and an initial velocity of 5.11 m/s. Ball 2 has a mass of m2 = 0.801 kg and is
initially at rest. No external forces act on the balls. What is the velocity of the ball 1 after the
collision?
Before collision
m2
m1
Vo2 = 0 m/s
After collision
Transcribed Image Text:The figure below illustrates an elastic head-on collision between two balls. Ball 1 has a mass of m1 = 0.251 kg and an initial velocity of 5.11 m/s. Ball 2 has a mass of m2 = 0.801 kg and is initially at rest. No external forces act on the balls. What is the velocity of the ball 1 after the collision? Before collision m2 m1 Vo2 = 0 m/s After collision
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