3 years ago

What type of force causes your car to move?

Physics

1 answer:

amid [387]3 years ago

3 0

Answer:

frictional force

Explanation:

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If a zebra weighs 390N what is its mass

stich3 [128]

W=mg
m = W/g = 390N/ 9.8 m/s^2 = 39.8 kg

some people round g to 10 m/s^2 and this will give answer of 39 kg, which is wrong

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3 years ago

CAN YOU HELP PLZZ & THX

maxonik [38]

Answer:

6.7x10 -7 C

Explanation:

The -7 is like a exponent on top, I think.

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3 years ago

An airplane is flying through the air at a speed of 150 mph at a heading of 60 degrees. if the wind is blowing at 20 mph from th

Crazy boy [7]

Answer:

Explanation:

Given

speed of plane 150 mph

heading $60^{\circ}$

wind is blowing at 20 mph from south-east

velocity of plane w.r.t. wind

$v_{pw}=150(\cos 60\hat{i}+\sin 60\hat{j})$

$v_{w}=20(\cos 45\hat{i}-\sin 45\hat{j})$

$v_{p}=v_{pw}+v_{w}$

$v_{p}=(150\cos 60+20\cos 45)\hat{i}+(150\sin 60-20\sin 45 )\hat{j}$

$v_{p}=89.14\hat{i}+115.76\hat{j}$

$|v_{p}|=146.103 m/s$

(b)after 30 minutes

Plane traveled in x direction $=89.14\times 0.5=44.57 miles$

Plane in Y direction $=115.76\times 0.5=57.88 miles$

Total distance $=\sqrt{x^2+y^2}=73.05 miles$

direction $tan\theta =\frac{115.76}{89.14}=1.298$

$\theta =52.38^{\circ}$ w.r.t east

4 0

3 years ago

Andrew kicks a ball along a straight path. The ball rolls straight forward for 13.2 meters. Then Andrew kicks the ball straight

tresset_1 [31]

Answer: 22.7 meters

Explanation: The distance traveled is how much the ball has rolled in total, this means the lenght of the path that it has followed from begining to end.

Since it first travels 13.2 meters and then 9.5 meters, if we sum this quantities:

13.2 + 9.5 = 22.7 meters

So 22.7 is the distance that the ball has traveled.

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4 years ago

E. An object is thrown from the top of a tower with

bearhunter [10]

Answer:

hehhehehehehehehe

Explanation:

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3 years ago