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4 years ago

Which of Newton’s laws of motion is demonstrated by a hammer pounding a nail into a board

2 answers:

5 0

In pounding a nail into the board using the hammer, third law of Motion given by Newton is followed or demonstrated.

Explanation:

''For every action, there is an equal and opposite reaction'' is the third ''Law of Motion'' that is given by Newton. When a hammer hits the nail into the board, which exerts the on the nail, in reaction to which nail exerts the same amount of force but in opposite direction force. With this action the pair of forces and nail is pounded into the board.

Sophie [7]4 years ago

3 0

The answer is Newton's third law.

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What is the temperature increase of 4.0 kg of water when heated by an 800-W immersion heater for 10 min? (cw = 4 186 J/kg⋅°C)

Llana [10]

Answer:

option C

Explanation:

given,

mass of water = 4 Kg

Water is heated to = 800 W

time of immersion = 10 min

= 10 x 60 = 600 s

using equation of specific heat

Q = m S ΔT

S is the specific heat capacity of water which is equal to 4182 J/kg°C.

and another formula of heat

Q = Pt

now,

P t = m S ΔT

800 x 600 = 4 x 4182 x ΔT

ΔT = 29° C

temperature increased is equal to ΔT = 29° C

Hence, the correct answer is option C

3 0

3 years ago

HELP ASAP PLEASE - Which best describes how the arrangement of the sun, moon, and the earth affect the range of the tides during

koban [17]

B. When the sun and the moon are aligned, their combined gravitational force attracts the water, causing super high tides on one side of the planet, and super low tides on the opposite side.

3 0

3 years ago

Read 2 more answers

If you push a 200 kg box with a horizontal force of 1,172 N and kinetic friction resists the motion with a force of 962 N, what

Lynna [10]

Answer:

a = 1.05m.s²

Explanation:

Fnet = m×a

Fapplied - friction = m×a

1172 - 962 = 200 × a

210 = 200a

a = 1.05

5 0

2 years ago

6. traction a. friction between a tire and the road.b. pushes a moving object out of a curve and into a straight linec. the abil

Gennadij [26K]

Answer:

6. a. friction between a tire and the road

7. c. energy of motion

8. c. the force with which a moving vehicle hits another object

Explanation:

6. As a car moves along the road, the tires push back against the ground. As tires push back against the ground, the road exerts and opposing force to the motion of the tires. This opposing force is the friction between the tires and the road. This opposing force between the tires and the rad is called traction.

So, the answer is a

7. As an object moves, it has energy. This energy due to its motion is called kinetic energy.

So, the answer is c

8. When a moving vehicle hits another object, it exerts a force on the object. The process of the vehicle hitting the other object is called impact and the force exerted on the object is called the force of impact.

So, the answer is c.

4 0

3 years ago

A 45 kg object has a momentum of 225 kg-m/s northward. What is the object's velocity?

melomori [17]

Answer: 5 m/s North

Explanation:

Velocity = Momentum/Mass

Velocity = 225 kg*m/s/45kg

Velocity = 5 m/s North

3 0

2 years ago