3 years ago

Describe five things that you do to make yourself feel warmer or cooler.

Physics

1 answer:

stira [4]3 years ago

7 0

Buy a fan or heater, get a blanket, take a shower, go outside, go by the fireplace

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a 2kg ball moving at speed 5m/s hits a wall .the force exerted by the wall on the ball is 100n .if the collision is perfectly el

levacccp [35]

Answer:

0.2s

force = change in momentum/ time

time = change in momentum/time

Explanation:

first, let's find the change in momentum

pf-pi

5×(-2) - 5× 2

-20kgm/s = 20kgm/s(by changing the direction of whole system)

time = change in momentum/time

20/100

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3 years ago

When the drivers pass each other, the driver of the red car is to toss a package of contraband to the other driver. To catch the

Brrunno [24]

Answer:

D=387.28m

Explanation:

At the moment where the toss is made $X_R = X_G$ , so we need both equations:

For the red car:

$X_R=\frac{a_R*t^2}{2}$ With initial speed of 0 and acceleration of 6.12m/s^2.

For the green car:

$X_G=Xo + V_G*t$ With $V_G = 60km/h*\frac{1000m}{1km} * \frac{1h}{3600s} = 16.66m/s$ and Xo = 200m

Since both positions will be the same:

$\frac{a_R*t^2}{2}=Xo+V_G*t$ Solving for t:

t1 = -5.8s and t1 =11.25s

Replacing t = 11.25 on either equation to find the displacement:

$D = X_R = \frac{a_R*t^2}{2} = 387.28m$

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4 years ago

For the vectors and , give in (a) unit-vector notation, and as (b) a magnitude and (c) an angle (relative to in the range of (-1

stealth61 [152]

Answer: a

Explanation:

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Lera25 [3.4K]

2,3,5 are correct just took the test

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Answer:

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