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ycow [4]
3 years ago
12

Which quantities define momentum?

Physics
1 answer:
grigory [225]3 years ago
7 0

Answer:

A. How much matter an object has, plus the magnitude and direction  of its motion

Explanation:

Momentum is defined as the product of mass by velocity, in the international system of measurements (SI) momentum has the following Units [kg*m/s].

P = m*v

where:

P = momentum Lineal [kg*m/s]

m = mass [kg]

v = velocity [m/s]

Therefore the answer is A) How much matter an object has, plus the magnitude and direction  of its motion

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A sled starts from rest,
Scorpion4ik [409]

Answer:

The acceleration of the sled is 4.6\ m/s^2.

Explanation:

It is given that,

Initial speed of sled is 0 because it was at rest.

It is placed at an angle of 28° on a frictionless hill.

We need to find the acceleration of the sled. It is placed at an incline. It means that the acceleration of the sled is given by :

a=g\sin\theta\\\\a=9.8\times \sin(28)\\\\a=4.6\ m/s^2

So, the acceleration of the sled is 4.6\ m/s^2.

6 0
3 years ago
Can someone help me pls!!
Katen [24]

Answer:

Decelerating

Explanation:

One arrow is moving it forward but the other arrow is using more force to move it backwards causing it to have a reduction in speed.

5 0
3 years ago
You are doing an experiment to determine how many passengers would fit into a full-sized plane. If a scale model plane has space
romanna [79]
The real place should theoretically have space for 87 passengers if it is an exact model and doesn't have modifications in the seat numbers.
5 0
3 years ago
Read 2 more answers
the car starts from a stop to travel 1100 meters in 14 seconds. it is clocked at 65 m/s at point k. find its average speed and a
inysia [295]

Answer:

The average velocity of the car is, V = 74.04 m/s

Explanation:

Given data,

The initial velocity of the car, u = 0 m/s

The displacement of the ca, S = 1100 m

The time period of travel, t = 14 s

The velocity of the car at point k, v = 65 m/s

Using the II equation of motion,

                      S = ut + ½  at²

Substituting the given values,

                      1100 = 0 + ½ x a x 14²

                          a = 11.22 m/s²

Using the III equation of motion

                         v² = u² + 2 as

                          v = √(2as)              (∵ u = 0)

Substituting,

                           v = √(2 x 11.22 x 1100)

                              = 157.11 m/s

The average speed of the car,

                        V=\frac{0+65+157.11}{3}

                        V = 74.04 m/s

Hence, the average velocity of the car is, V = 74.04 m/s

4 0
3 years ago
A 45 N girl sits on a bench 0.6 meters off the ground. How much work is done on the bench?
ycow [4]

Answer: 27 joules

Explanation:

Work is done when force is applied on the bench over a distance. it is measured in joules.

Workdone = force x distance

= 45 N x 0.6 metres

= 27 joules

Thus, 27 joules of work is done on the bench.

6 0
3 years ago
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