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Kruka [31]
2 years ago
7

A rock accelerates down a hill at 7 m/s2 with a force of 30.0 N. What is the mass of the rock?

Physics
1 answer:
choli [55]2 years ago
3 0

Answer:

we know thatv

F =m×a

so, m = F/a

m =30/7

m=30/7kg

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impulse = MV

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Use the information and model to answer the following question.
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2. A truck speeds up from a velocity of 6 m/s to 14 m/s in 4 seconds. What is the trucks acceleration? SHOW YOUR WORK
zavuch27 [327]

#2

As it is given here

initial speed is

v_i = 6 m/s

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#3

As it is given here

initial it starts from rest

v_i = 0 m/s

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#4

i think question is not correct as in first line it is saying about a bag of trash and then in next line it is asking for the position of Jumper and bridge.

7 0
2 years ago
Complete the ray diagram and label incident ray, refracted ray, angle of incidence, and angle of refraction ​
Novay_Z [31]

Answer:

Solution

verified

Verified by Toppr

(a) The labelled diagram is shown.

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μ=  

Speedoflightindiamond

Speedoflightinair

​

 

and, the ratio of these velocities is 2.42. i.e., This means that the speed of light in diamond will reduce by a factor of 2.42 as compared to its speed in air. In other words, the speed of light in diamond is  

1/2.42

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Explanation:

a) Draw and label the diagram given :

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  (ii) Refracted ray

  (iii) Emergent ray

  (iv) Angle of reflection

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