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ki77a [65]
3 years ago
6

A car travels at 40 mph. what distance will it travel in 3 hours?​

Physics
2 answers:
lukranit [14]3 years ago
8 0

Car speed = 40m/ hour

3 hours = 40 × 3 = 120m /hour

Margarita [4]3 years ago
7 0

Answer:

120

Explanation:

if the car travels 40 in one hour , to find the speed in 3 hours multiply 40 x 3 which will give us 120

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A 0.500 kg football is thrown with a speed of 15.0 m/s. A stationary receiver catches the ball and brings it to rest in 0.020 s.
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Answer:

Imp = 7.5\,\frac{kg\cdot m}{s}

Explanation:

Let assume that direction is positive when football travels to the player. The situation can be described properly by applying the definition of Momentum and Impulse Theorem. That is to say:

(0.5\,kg)\cdot (15\,\frac{m}{s}) - F \cdot (0.02\,s) = 0\,kg\cdot \frac{m}{s}

The average force needed to stop is obtained after some algebraic manipulations:

F = 375\,N

The impulse delivered to the ball is:

Imp = (375\,N)\cdot (0.02\,s)

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3 0
3 years ago
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Explanation:

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3 years ago
A laser beam is incident on two slits with a separation of 0.180 mm, and a screen is placed 5.05 m from the slits. If the bright
gladu [14]

Answer:

The answer is "530 nm".

Explanation:

d=0.180 \ nm=0.180 \times 10^{-3} \ m\\\\L= 5.05\ m\\\\\Delta y=  1.62\ cm= 1.62 \times 10^{-2} \ m\\\\

Using formula:

\Delta y=\frac{\lambda L}{d}\\\\\lambda =\frac{d\Delta y}{L}\\\\

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Answer:

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Explanation:

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