All categories

3 years ago

Questions under the topic momentum of an unstable wooden block

1 answer:

7 0

I mean... how to solve/find momentum

Linear momentum (momentum for brevity) is defined as the product of a system's mass multiplied by its velocity. In symbols, linear momentum p is defined to be p = mv, where m is the mass of the system and v is its velocity. The SI unit for momentum is kg · m/s.

You might be interested in

What force must be provided to accelerate a 64-lb object upward at a rate of 2 ft/s2? (Use g = 32 ft/s2.)

vovikov84 [41]

Answer:

The force that must be provided to accelerate the object = 302.196 N

Explanation:

Force: Force can be defined as the product of mass and acceleration. The S.I unit of force is Newton (N).

Ft - W = ma............ Equation 1

Ft = W + ma .......... Equation 2

Where Ft = force provided, W = weight of the object, m= mass of the object, a = acceleration of the object.

Given: mass = 64 lb, g = 32 ft/s² a = 2 ft/s²

Conversion: (i) from 64 pounds to Kg = 64/2.2046

= 29.03 kg

(ii) from 2 ft/s² to m/s² = 0.3048 × 2 = 0.6098 m/s²

(iii) from 32 ft/s² to m/s² = 0.3048×32 = 9.8 m/s².

and W = mg = 29.03 × 9.8 = 284.494 N,

Substituting these values into equation 2,

Ft = 284.494 + 29.03×0.6098

Ft = 284.494 + 17.7

Ft = 302.196 N

Therefore, the force that must be provided to accelerate the object = 302.196 N

8 0

3 years ago

A jet airliner moving initially at 504 mph (with respect to the ground) to the east moves into a region where the wind is blowin

adelina 88 [10]

Answer

given,

intial velocity = 504 mph

wind speed = 219 mph

at an angle of 29◦

from the data

The resultant velocity =

$V = V_x \hat{i} + V_y\hat{j}$

$V = (504 + 219 cos 29^0 ) \hat{i} +(219 sin 29^0 )\hat{j}$

$V = 695.54\hat{i} + 106.17 \hat{j}$

the magnitude of velocity

$V = \sqrt{695.54^2+106.17^2}$

V = 703.59 m/s

direction

tan θ = $\dfrac{106.17}{695.54}$

θ = 8.676°

8 0

4 years ago

The Jamaican bobsled team hit the brakes on their sled so that it decelerates at a uniform rate of 0.43 m/s^2. How long does it

topjm [15]

Answer: The distance covered by a certain object which is travelling at a certain speed is calculated through the equation,

d = (V₀)t + 0.5at²

where d is the distance, V₀ is the initial speed, a is deceleration, and t is the time. Substituting the known values,

85 = (V₀)(t) + (0.5)(-0.43 m/s)(t²)

Because we are not given with the initial velocity, our answer would remain as the equation which is written above.

Explanation: Hope this helps

3 0

3 years ago

______ interference occurs when two waves are out of phase.

Otrada [13]

Answer:

What interference occurs when two waves are out of phase?

Image result for ______ interference occurs when two waves are out of phase.

Destructive interference

Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is canceled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero.

5 0

2 years ago

Light hits ocean during

Lostsunrise [7]

Answer:

no way to tell since the ocean surface is moving too violently it's not possible to determine the reflected angle

4 0

2 years ago

Questions under the topic momentum of an unstable wooden block​

Questions under the topic momentum of an unstable wooden block