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malfutka [58]
3 years ago
5

List 3 additional real world examples that show work being done.

Physics
2 answers:
Usimov [2.4K]3 years ago
8 0
I am walking to the end of the room holding three textbooks.
Playing tug of war
Moving boxes to move out of your house
IrinaVladis [17]3 years ago
5 0

Answer:

Explanation:

Work done is defined as the product of force and the displacement in the direction of force.

W = F × D

Work is a scalar quantity and it's SI unit is joule.

Example

1. If we hold a book and move vertically, the work is done by me.

2. Push a cart and the cart moves some distance, work is done by me.

3. Pull a cart on an inclined plane.

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A girl pulls her younger brother on a sled along a flat sidewalk (the total mass of the sled is 30kg). A frictional force of 50N
harkovskaia [24]

Answer:

6.13 s

219 N

Explanation:

Newton's law in the x direction:

∑F = ma

150 cos 30° N − 50 N = (30 kg) a

a = 2.66 m/s²

Δx = v₀ t + ½ at²

(50 m) = (0 m/s) t + ½ (2.66 m/s²) t²

t = 6.13 s

Newton's law in the y direction:

∑F = ma

Fn + 150 sin 30° N − (30 kg) (9.8 m/s²) = 0

Fn = 219 N

4 0
3 years ago
A Scooter travelling at 10m/s speed up to 20m/s in 4 sec.find the acceleration of scooter​
stira [4]

Answer:

2.5 m/s²

Explanation:

Given,

Initial speed ( u ) = 10 m/s

Final speed ( v ) = 20 m/s

Time ( t ) = 4 seconds

To find : Acceleration ( a ) = ?

Formula : -

a = ( v - u ) / t

a = ( 20 - 10 ) / 4

= 10 / 4

= 5 / 2

a = 2.5 m/s²

Therefore,

The acceleration of the scooter is 2.5 m/s²

7 0
2 years ago
A soccer player extends her lower leg in a kicking motion by exerting a force with the muscle above the knee in the front of her
AlekseyPX

Answer:

Answer:

28.025 Nm

Explanation:

Angular acceleration, α = 29.5 rad/s^2

oment of inertia, I = 0.95 kg m^2

The torque is defined as

τ = I x α

τ = 0.95 x 29.5

τ = 28.025 Nm

Thus, the torque is 28.025 Nm.

Explanation:

7 0
3 years ago
Can you guys make a three line poem with the word time
Elina [12.6K]
Time should not be messed with
for bad things could happen
so think before you act or you'll regret it
3 0
3 years ago
Read 2 more answers
Which of the following are functions of both cells and living organisms?
Nana76 [90]
I believe it is, All of the above.
6 0
3 years ago
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