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rosijanka [135]
3 years ago
10

When an inclined plane is used, A. the mechanical advantage increases as the height increases. B. a smaller force is exerted ove

r a longer distance. C. a negative mechanical advantage can result. D. a greater force is exerted over a shorter distance
Physics
1 answer:
lesantik [10]3 years ago
7 0
Choice-B says it all.
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D - performance measures. 

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A 4,000 kg truck is moving at +10 m/s hits a 1500 kg parked car which moves off at +10 m/s. What is the velocity of the truck
Igoryamba

Answer:

10m/s

Explanation:

Using the law of conservation of momentums

M1u1+m2u2 = (m1+m2)v

Substitute.

4000(10)+1500(10) = (4000+1500)v

40,000+15,000 = 5,500v

55000 = 5500v

v = 55000/5500

v= 10m/s

Hence the velocity of the truck after Collision is 10m/s

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3 years ago
In a closed electrical circuit, what visible evidence indicates that energy is flowing?
____ [38]

Answer:

A light bulb lightning up

Explanation:

5 0
4 years ago
A police officer measures a straight skid mark on the road of length d=20m. the car involved is stationary at the end of the ski
zvonat [6]
80 divided by 20 is 2
8 0
4 years ago
What is the relationship between the mass of an object and the amount of force required to drag it across the table?
hammer [34]

Answer:

Force = mass × acceleration

Explanation:

The amount of force required to drag the object across the table is the product of the mass of the object and acceleration

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