2 years ago

An object of mass 10kg is accelerated upward at 2m/s^2. What force is required

1 answer:

7 0

Ya the equation F=MA
So you do mass x acceleration
10 x 2 = 20
Force is measured in Newtons which has a unit of N
So the answer is = 20N

Hope that is helpful

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A 25 kg child runs at a speed of 5.0 m/s and jumps onto a stationary shopping cart and holds on for dear life. The cart has mass

makkiz [27]

Answer:

3.38 m/s

Explanation:

Mass of child = m₁ = 25

Initial speed of child = u₁ = 5 m/s

Initial speed of cart = u₂ = 0 m/s

Mass of cart = m₂ = 12 kg

Velocity of cart with child on top = v

This is a case of perfectly inelastic collision

$m_1u_1+m_2u_2=(m_1+m_2)v\\\Rightarrow v=\frac{m_1u_1+m_2u_2}{m_1+m_2}\\\Rightarrow v=\frac{25\times 5+12\times 0}{25+12}\\\Rightarrow v=\frac{125}{37}\\\Rightarrow v=3.38\ m/s$

Velocity of cart with child on top is 3.38 m/s

7 0

2 years ago

Acceleration and Force

olga55 [171]

Answer:

I'm pretty sure its 3m/s^2 for the acceleration but I don't know the force part sorry .

Explanation:

15m/s - 0m/s divided by 5 s = 3m/s

I'm no expert or anything so I could be wrong but this is the best I can give you. Sorry

6 0

1 year ago

Suppose a log's mass is 5 kg. After burning, the mass of the ash is 1 kg. explain what May have happened to the other 4 kg.

ladessa [460]

The other 4 kg of mass may have departed the scene
of the fire, in the form of gases and smoke particles.

7 0

3 years ago

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skad [1K]

Answer:

what this please be clear

5 0

2 years ago

What is the acceleration of a boy on a skateboard if the net force on the boy is 15 N? The total mass of the boy and the skatebo

Stels [109]

   Force = (mass) x (acceleration)

If the full 15N is pointing parallel to the ground,
then

   15 N = (58 kg) x (acceleration).

Divide each side
by 58 kg: Acceleration = 15 N / 58 kg

   = (15 kg-m/s²) / (58 kg)

   = (15/58) (kg-m/kg-s²)

   = 0.26 m/s² .

7 0

3 years ago

Read 2 more answers