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lawyer [7]
3 years ago
6

A parachute on a racing dragster opens and changes the speed of the car from 95 m/s to 35 m/s in a period of 6.5 seconds. What i

s the acceleration of the dragster? ​
Physics
1 answer:
tatiyna3 years ago
6 0

Answer:

30 miles

Explanation:

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A 150 N boy rides a 60 N bicycle a total of 200 m at a constant speed. The frictional force against the forward motion of the bi
soldier1979 [14.2K]

Answer:

W = 7000 J

Explanation:

To solve this problem we use that the speed of the bicycle is constant, therefore its acceleration is zero

            F -fr = 0

            F = fr

where F is the force applied by the child

Work is defined by

           W = F. x

           W = F x cos θ

in this case the child's force is parallel to the movement, therefore the angle is zero and cos 0 = 1

           

let's calculate

           W = 35 200

           W = 7000 J

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3 years ago
A 25 kg mass is hanging from two cables, each with their own tension. Cable 1 is connected to the
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a. one line down one line to the right one live to the northwest from the object

b. t1=190 t2=310

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2 years ago
The lower the frequency the _____ the pitch sound.
stepan [7]
The lower the frequency the lower the pitch sound.
8 0
3 years ago
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For a top player, a tennis ball may leave the racket on the serve with a speed of 55 m/s (about 120 mi/h). If the ball has a mas
inn [45]

Answer:

Yes is large enough

Explanation:

We need to apply the second Newton's Law to find the solution.

We know that,

F= ma

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Replacing the aceleration value in the equation force we have,

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Substituting our values we have,

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F=825N

The weight of the person is then,

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W = (60)(9.8) = 558N

<em>We can conclude that force on the ball is large to lift the ball</em>

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