3 years ago

An arrow of mass 0.5kg so it has 25J of kinetic energy; find the speed of the arrow v = m/s

Physics

1 answer:

miss Akunina [59]3 years ago

4 0

Answer:

10 m/s

Explanation:

Use the kinetic energy formula:

KE=(1/2)mv^2

I always remember it as Kevin is half-mad, and very square.

25J = (1/2)*0.5kg*(v^2)

50J = 0.5kg*(v^2)

100J = v^2

v = 10 m/s

Check it:

KE = (1/2)*0.5*(10^2)

KE = 25J

yep, it's right!

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Read 2 more answers

A monster truck enters a freeway with a speed of 0 m/s and accelerates at a rate of 25 m/s2 in 5 seconds. How far does the car t

Furkat [3]

Answer:

312.5

Explanation:

we know that

s= ut + 1/2 at^2

= 0*5+1/2*25*5^2

= 0+ 625/2

=312.5

plz mark as brainalist

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3 years ago

An arrow of mass 0.5kg so it has 25J of kinetic energy; find the speed of the arrow v = m/s​

An arrow of mass 0.5kg so it has 25J of kinetic energy; find the speed of the arrow v = m/s