PHYSICS
HIGH SCHOOL

Answer:

Answer:

a=2.378 m/s^2

Explanation:

a=Δv/Δt------eq(1)

Δv=Vf-Vi=120 km/h-0 km/h=120 km/h

or Δv=33.3 m/sec

or time=t=14s

putting values in eq(1)

a=33.3/14

a=2.378 m/s^2

Answer:

Answer:

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Explanation:

A = 2.378M/S^2

COLLEGE

A floating ice block is pushed through a displacement d = (23 m) i - (9 m) j along a straight embankment by rushing water, which exerts a force F = (200 N) i - (149 N) j on the block. How much work does the force do on the block during the displacement?

Work is the energy transferred to an object by the application of force along a displacement. The work done by the force on the block during the displacement is 5941 J.

Work is the energy transferred to an object by the application of force along a displacement.

Given Here,

Displacement d = (23 m) i - (9 m) j

Force exerted on the block F = (200 N) i - (149 N) j

Work formula,

W = F.d

W = (200 N) i - (149 N) j . (23 m) i - (9 m) j

Since i.i = j.j = k.k = 1

Hence,

W = 4600 + 1341

W = 5941 J

Hence we can conclude that the work done by the force on the block during the displacement is 5941 J.

To know more about work formula, refer to the link:

brainly.com/question/22116319

Answer:

Work done, W = 5941 joules

Explanation:

It is given that,

Force exerted on the block,

Displacement,

Let W is the work done by the force do on the block during the displacement. Its formula is given by :

Since, i.i = j.j = k.k = 1

W = 5941 joules

So, the work done by the force do on the block during the displacement is 5941 joules. Hence, this is the required solution.

HIGH SCHOOL

If a client's knees hurt after a one-week walking regimen, which one of the following suggestions is most appropriate? A. Take a week's rest from exercise.

B. Wear different shoes.

C. Switch to anaerobic exercise.

D. Jog in a swimming pool.

A, it's better to take a break to let your body rejuvenate.

MIDDLE SCHOOL

Which option determines gravitational pull? A. Acceleration

B. The sun

C. Volume

D. Mass

The Answer is : mass

D

D

COLLEGE

Why do lunar eclipses typically last much longer than solar eclipses?

Answer and Explanation:

This can be explained as:

Solar eclipses occur when the man cast its shadow on the earth i.e., basically it is the shadow of moon on the earth whereas lunar eclipses is when the sun s blocked by the shadow of the earth i.e., we can say that lunar eclipse is the shadow of the earth on the moon.

Since, Earth is bigger than the moon and therefore, the shadow casted by the Earth on the moon will linger more than the shadow of the moon casted on the Earth.

This is the reason that Lunar eclipses last for quite aa longer time than the solar eclipses.