3 years ago

An apple fell 4 m from the top of the tree to the ground in 0.9 s. what was its average speed?

Physics

1 answer:

gulaghasi [49]3 years ago

7 0

The answer will be c
speed is equals to distance over time

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A French submarine and a U.S. submarine move toward each other during maneuvers in motionless water in the North Atlantic. The F

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Answer:

$f_{U}= 1019.72hz$

Explanation:

From the equation we are told that:

Velocity of French sub $V_{U}= 43.00km/h$

Velocity of U.S. sub at $V_{F}|=64.00 km//h$

French Wave Frequency $F_{F}=1000Hz$

Velocity of wave $V_{s}=5470 km/h$

Generally the equation for Signal's frequency as detected by the U.S. is mathematically given by

Doppler effect

$f_{U} = \frac{ f_F (vs + v_{U})}{(v_s - v_F) }$

$f_{U}= \frac{ 1000 x ( 5470+64)}{(5470-43)}$

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3 years ago

A car starts from rest, speeds up with constant acceleration, and travels 400 meters in 10 seconds. What was the acceleration of

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Answer:

Acceleration of the car will be $a=8m/sec^2$

Explanation:

We have given that car starts from rest so initial velocity of the car u = 0 m/sec

And car traveled 400 m in 10 sec

So distance traveled by car s = 400 m

Time taken to compete this distance t = 10 sec

We have to find the acceleration of the car

From second equation of motion we know that $s=ut+\frac{1}{2}at^2$

So $400=0\times 10+\frac{1}{2}\times a\times 10^2$

$a=8m/sec^2$

So acceleration of the car will be $a=8m/sec^2$

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3 years ago

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Answer: It's the third one.

Explanation:

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Within that unit of blood, you are going to have plasma, white blood cells, red blood cells, and platelets.

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