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2 years ago

13

After the same car leaves the platform, gravity causes it to accelerate downward at a rate of 9.8 m/s2. What is the gravitationa

l force on the car?

1 answer:

Simora [160]2 years ago

7 0

The gravitational force on the car is

(9.8 m/s^2) x (the car's mass in kg).

The unit is newtons.

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Answer:

False

Explanation:

It is located in the little dipper whose stars are more faint.

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3 years ago

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A horizontal force of 140 N is needed to pull a 60kg box across the horizontal floor at constant speed . Find the coefficient of

____ [38]

Explanation:

formula for force is:

force=mass × acceleration

but in case of friction

force =coefficient of friction × Normal Reaction

F. = u × R

U = F/R

but when placed horizontally

R= M×G

M=mass=60kg

G=Gravity(10m/s or 9.8m/s)

F=140N

U=140/60×10

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U=0.2333333333

approximately to 3 significant figures

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1 year ago

Two cars are traveling along perpendicular roads, car A at 40 mi/hr, car B at 60 mi/hr. At noon, when car A reaches the intersec

Serggg [28]

Answer:

$\frac{dD}{dt} = -4 miles/hour$

negative sign indicates that the distance is decreasing with time

Explanation:

Let at any time t after noon that is 12 p.m.

distance traveled by car A = 40t

distance traveled by car B = 90-60t

then distance between the two cars at time t

$D^2= (40t)^2+(90-60t)^2$ ............1

also, at time 1 p.m.

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$2D\frac{dD}{dt}= 2\times40t\times40+2(90-60t)(-60)$

put t= 1 and D= 50 we get

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2 years ago

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3 years ago

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Answer:

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Also,

One cup of the liquid contains 3 ounces.

Total number of ounces administered = 8 + 3 = 11 ounces.

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2 years ago