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kakasveta [241]
3 years ago
10

A large dog with a mass of 30 kg chases a car at 2 m/s. What is the magnitude of its momentum?

Physics
1 answer:
AlexFokin [52]3 years ago
6 0

Answer: 60 kg-m/s

Explanation: I just answered that question and got it correct.

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Two spheres A and B are projected off the edge of a 1.0 m high table with the same horizontal velocity . sphere A has a mass of
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3 years ago
A small rock is thrown vertically upward with a speed of 21.0 m/sm/s from the edge of the roof of a 21.0-mm-tall building. The r
FromTheMoon [43]

Answer:

Explanation:

A.

Given:

Vo = 21 m/s

Vf = 0 m/s

Using equation of Motion,

Vf^2 = Vo^2 - 2aS

S = (21^2)/2 × 9.8

= 22.5 m.

B.

Given:

S = 22.5 + 21 mm

= 22.521 m

Vo = 0 m/s

Using the equation of motion,

S = Vo × t + 1/2 × a × t^2

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t^2 = (2 × 22.521)/9.8

= 4.6

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4 0
3 years ago
Two particles move along an x axis. The position of particle 1 is given by x ! 6.00t 2 # 3.00t # 2.00 (in meters and seconds); t
s344n2d4d5 [400]

Answer:

15.6m/s

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V1=12t+3

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V2=20-4t^{2}

V1=V2 to see when the velocities of particles match

12t+3=20-4t^2

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and we take the positif root

t=1.05 sec

if we evaluate the velocity (V1 or V2) the result is 15.6m/s

7 0
3 years ago
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