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3 years ago

A bowling ball has a mass of 6 kg. What happens to its momentum when its speed increases from 2 m/s to 4 m/s?

Physics

2 answers:

valentinak56 [21]3 years ago

5 0

Momentum = (mass) x (speed)

Choice-B is the correct one.

mash [69]3 years ago

3 0

Answer:

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

Explanation:

The momentum of an object is given by the product between its mass (m) and its velocity (v):

$p=mv$

Let's apply this formula to calculate the initial momentum and final momentum of the ball:

- initial momentum:

$p_i = m v_i = (6 kg)(2 m/s)=12 kg m/s$

- Final momentum:

$p_f = m v_f = (6 kg)(4 m/s)=24 kg m/s$

So, the correct answer is

B) The initial momentum is 12 kg*m/s, and the final momentum is 24 kg*m/s

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Which particle is most likely to interact with your hand? Select one: a. Alpha particle b. Beta particle c. Gamma particle d. Ne

IgorLugansk [536]

Answer:

The correct option is a

Explanation:

The alpha particle has the lowest penetrating power of the trio of alpha, beta and gamma particles and can be stopped by a sheet of paper and hence cannot penetrate a human skin. Beta particle has a higher penetrating power than alpha particle (some of it penetrates the human skin and some do not) while the gamma particle has the highest penetrating power (with all of it penetrating the human skin).

From the above description, it can be deduced that the alpha particle will stay and interact with the hand (because of its low penetrating power) as the remaining particles move through the skin.

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4 years ago

As a delivery truck travels along a level stretch of road with constant speed, most of the power developed by the engine is used

velikii [3]

Answer:

128 N

Explanation:

Power can be defined as

$P = F\cdot v$

F is the force and v is the velocity.

$F = \dfrac{P}{v}$

According to the question, P = 5.15 hp = 5.15 × 746 W.

v = 30 m/s

$F = \dfrac{5.15\times 746\text{ W}}{30\text{ m/s}} = 128 \text{ N}$

Since most of the power is used to compensate for the energy transformations due to friction forces, the total frictional is 128 N

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3 years ago

A snail crawls across a leaf leaving a slime trail at a speed of 0.2 m/s. scalar vector

horsena [70]

Answer:

scaler quantity

Explanation:

because vector quantity includes direction as well...

8 0

3 years ago

Julietta and Jackson are playing miniature golf. Julietta's ball rolls into a long. Straight upward incline with a speed of 2.95

Verdich [7]

Answer:

The length of the incline is 3.504 meters.

Explanation:

Let suppose that Julietta's ball decelerates uniformly, then we determine the length of the incline is determined by the following equation of motion:

$\Delta s = v_{o}\cdot t +\frac{1}{2}\cdot a \cdot t^{2}$ (Eq. 1)