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Katen [24]
3 years ago
10

What is the acceleration of a body moving with uniform velocity?

Physics
1 answer:
AfilCa [17]3 years ago
3 0

Acceleration is the rate of change of velocity, a body moving with uniform velocity does not possess acceleration at all i.e. acceleration is zero





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Hi:

a)

The kinetic energy of the bullet is given by the following formula:

K = (1/2) m * v^2

With

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the work-kinetic energy theorem states that the work done on a system is the same as the differnce in kinetic energy of the same. Since the initial state of the bullet was at zero velocity (it was at rest)  Ki = 0, therefore:

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If we consider a constant force (and average net force) directed along the trayectory of the bullet, the work and the force will be realted by:

W = F * L

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F = (4 289.8 J) / (64.8 cm) = (4 289.8 Nm) / (0.648 m) = 6620.1 N

d)

The acceleration can be found dividing the force by the mass:

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e)

The force will have a magnitude equal to c) and direction along the barrel towards the exit

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