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4 years ago

An object is given an initial velocity. What will happen to the object if no other forces act on it?

Physics

1 answer:

Phoenix [80]4 years ago

6 0

Answer:

The object will travel at a constant rate in along a straight line.

Explanation:

In the given situation, it is mentioned that there is no external force acting on the given object. Thus, it will retain its initial velocity along a straight path.

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A boy pushes his 5.0 kg Thomas the Train toy from rest with a horizontal force of 5 N. What is the KE of the toy after being pus

raketka [301]

Answer:

15 miles

Explanation:

my opinion is 15 because 15 is the most reasonable answer

3 0

3 years ago

The rate of change of momentum?

Blizzard [7]

Answer:

Answer in below and plz mark me as brainlist plz

Explanation:

The rate of change of momentum =tm(v−u) Rate of change of momentum = force applied. Force∝tm(v−u) Velocity is the rate of change of displacement and acceleration is the rate of change of velocity. Impulse is a change in momentum

6 0

3 years ago

A dog is walking back home and its motion is modeled by the graph above. What position was the dog at 3 seconds after it started

hammer [34]

6 meters because 6/3 = 10/5

4 0

3 years ago

A 5.00 kg dog runs towards a skateboard with a speed of 2.50 m/s. The skateboard is initially at rest. The dog jumps onto the sk

ladessa [460]

Answer:

The mass of the skateboard is 1.25 kg.

Explanation:

We have,

Mass of dog, m = 5 kg

Initial speed of dog, u = 2.5 m/s

Initial speed of skateboard, u' = 0 (at rest)

The dog jumps onto the skateboard and both the dog and skateboard move with a speed of 2.00 m/s. It is the common speed of the dog +skateboard, V = 2 m/s. We need to find the mass of the skateboard. Using conservation of momentum as :

$mu+m'u'=(m+m')V$

m' is mass of skateboard

$5\times 2.5=(5+m')2\\\\m'=1.25\ kg$

So, the mass of the skateboard is 1.25 kg.

6 0

3 years ago

A 18000 Hz wave has wavelength of 0.03 meters. How fast is this wave<br> traveling?

Alex Ar [27]

Answer:

540m/s

Explanation:

Given parameters:

Frequency of the wave = 18000Hz

Wavelength of the wave = 0.03m

Unknown:

How fast is the wave traveling = ?

Solution:

How fast the wave is traveling is a measure of the speed of the wave;

Speed of wave = frequency x wavelength

Now insert the given parameters and solve;

Speed of wave = 18000 x 0.03 = 540m/s

4 0

3 years ago