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nevsk [136]
3 years ago
14

10. Hamilton How long does it take Lewis travelling at 156 m.p.h to cover 16 miles?

Physics
2 answers:
Anvisha [2.4K]3 years ago
6 0

Answer: Hello!

Lewis is travelling at 165 mph, which means miles per hour, this says that he does 165 miles in one hour.

We want to know how much time takes to cover 16 miles.

this can be calculated as the quotient of the distance and the velocity; this is:

t = \frac{16 mi}{165 mi/h} = 0.096 h

if we want to write this in minutes, then:

we know that one hour has 60 minutes, then 0.096 hours has:

0.096h*60mins/1h = 5.8 minutes.

then Lewis needs 5.8 minutes in order to cover 16 miles if his speed is 156 miles per hour.

MAVERICK [17]3 years ago
6 0
\frac{16m}{156m/h}  = .1h
.1h * 60min/h = 6 minutes.
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v = u + at ..................... Equation 1,

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t = (v-u)/a ....................... Equation 2

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Given: v = 0 m/s, u = 6.5 m/s, a = - 1.2 m/s² ( decelerating).

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A 26.0 g ball is fired horizontally with initial speed v0 toward a 110 g ball that is hanging motionless from a 1.10 m -long str
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Answer:

7.3 ms^{-1}

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Consider the collision between the two balls

m  = mass of the ball fired = 26 g

v_{o} = initial velocity of ball fired before collision = ?

v_{f} = final velocity of ball fired after collision = ?

using conservation of momentum

m v_{o} = MV + m v_{f}\\26 v_{o} = (110)(2.8) + 26 v_{f}\\v_{f} = v_{o} - 11.85

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