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77julia77 [94]
3 years ago
5

It takes a car 1.75 hours to go from mile marker 10 to mile marker 115.

Physics
2 answers:
vlada-n [284]3 years ago
4 0
Average speed of the car = (change in distance) / total time taken = 115-10/1.75 = 105/1.75 =60 miles/hr. B is the correct answer
olga_2 [115]3 years ago
3 0
B.60 miles per hour...
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A pebble is thrown into the air with a velocity of 19/m at an angle of 36 with respect to the horizontal.
kow [346]

Answer:

The maximum height the pebble reaches is approximately;

A. 6.4 m

Explanation:

The question is with regards to projectile motion of an object

The given parameters are;

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The angle the projectile path of the pebble makes with the horizontal, θ = 36°

The maximum height of a projectile, h_{max}, is given by the following equation;

h_{max} = \dfrac{\left (u \times sin(\theta) \right)^2}{2 \cdot g}

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h_{max} = \dfrac{\left (19 \times sin(36 ^{\circ}) \right)^2}{2 \times 9.8} = 6.3633894140470403035477570509439

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3 0
3 years ago
A sphere of mass 40kg is attaracted by a second sphere of mass 15 kg when their centers are 20 cm apart with a force of 0.1mg-wt
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what is the acceleration of a 2,000- kilogram truck if a force of 4,200. N is used to make it start moving forward?
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Chemical energy. Elimination is useful to answer this question.

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