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2 years ago

A small truck has a mass of 1200 kg. If it is traveling at a velocity of 42.5 m/s, determine the kinetic energy.

Physics

1 answer:

LuckyWell [14K]2 years ago

3 0

Answer:

25,500J

Explanation:

KE =1/2 mv^2

Mass=1200kg

Velocity =42.5m/s

KE = 1/2 x 1200 x 42.5

=25,500J

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A box is moving along the x-axis and its position varies in time according to the expression:

Colt1911 [192]

Answer:

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Explanation:

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$v = \frac{\Delta x}{\Delta t} = \frac{x_2 - x_1}{\Delta t}$

$v = \frac{6*(3.2 + \Delta t)^2 - 61.44}{\Delta t}$

$v = \frac{6(3.2^2 + 6.4\Delta t + \Delta t^2) - 61.44}{\Delta t}$

$v = \frac{61.44 + 38.4\Delta t + \Delta t^2 - 61.44}{\Delta t}$

$v = \frac{\Delta t(38.4 + \Delta t)}{\Delta t}$

$v = 38.4 + \Delta t$

As Δt approaches 0, v = 38.4 + 0 = 38.4 m/s

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Read 2 more answers

A uniform stick 1.5 m long with a total mass of 250 g is pivoted at its center. A 3.3-g bullet is shot through the stick midway

Andru [333]

Answer:

63.44 rad/s

Explanation:

mass of bullet = 3.3 g = 0.0033 kg

initial velocity of bullet $v_{1}$ = 250 m/s