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3 years ago

40 meters divided by 5

Physics

1 answer:

denis23 [38]3 years ago

8 0

Answer:

8 meters

Explanation:

40/ 5 = 8

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4. An object is moving with an initial velocity of 9 m/s. It accelerates at a rate of 1.5

Nata [24]

Answer:

11.9 m/s

*But if you need the answer with sig figs it should be 10m/s (1sf) or 12m/s (2sf)

Explanation:

${vf}^{2} - {vi}^{2} = 2ad$

${vf}^{2} = 2ad + {vi}^{2}$

${vf}^{2} = 2 \times 1.5 \times 20 + {9}^{2}$

${vf}^{2} = 60 + 81$

${vf}^{2} = 141$

$vf = \sqrt{141}$

$vf = 11.874$

best answer if it worked

3 0

3 years ago

Jasmine is diving off a 3-meter springboard. her height in meters above the water when she is x meters horizontally from the end

olganol [36]

Answer:

5.25 m

Explanation:

Given;

The height equation h;

h=-x^2+3x+3

Where;

h = the height above water

x = horizontal distance from the end of the board

The maximum height is at h' = 0, when change in h with respect to change in x is equal to zero.

differentiating the equation h.

dh/dx = h' = -2x + 3 = 0

Solving for x;

2x = 3

x = 3/2

Substituting into the function h;

h max = -x^2+3x+3

h max = -(3/2)^2 + 3(3/2) +3 = -9/4 +9/2 +3 = 9/4 + 3 =

h max = 21/4 = 5.25 m

8 0

3 years ago

Need help with this question

zmey [24]

Momentum has a magnitude and a direction.

Its magnitude is (mass) x (magnitude of the velocity)

Its direction is the same as the direction of the velocity.

The thing you should memorize is: Momentum = (mass) x (velocity). P=mv

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4 years ago

When the steel ball drops on the constant velocity cart, it follows a ____ path in the frame of reference fixed to the ____, but

Effectus [21]

Answer:

PARABOLIC, EARTH, VERTICAL, INERTIAL ang PHYSICAL LAWS

Explanation:

In this exercise you are asked to complete the missing words.

When the steel ball falls on the constant speed car, it follows a PARABOLIC path in the reference frame fixed to EARTH, but a VERTICAL straight line in the reference frame of the constant speed car. Without a fixed frame of reference, you cannot tell whether or not you are in an INERTIAL frame of reference. All frames of reference that move at constant speed relative to each other are PHYSICAL LAWS__equivilent__.

\ r

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3 years ago

What are the effect of sound energy in air

ser-zykov [4K]

This will take me a little bit let me research :)

5 0

4 years ago