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Nataly [62]
3 years ago
10

7. A bicycle accelerates at 2.0 m/s2. If the mass of the bicycle and rider together is

Physics
1 answer:
kkurt [141]3 years ago
4 0

Answer:

170 N

Explanation:

Since Force F = ma were m = mass = 85 kg and a = acceleration = 2.0 m/s².

So the net force on the bicycle is

F = ma = 85 kg × 2.0 m/s² = 170 N

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2 years ago
A baseball with a mass of 0.15 kilograms collides with a bat at a speed of 40 meters/second. The duration of the collision is 8.
Vedmedyk [2.9K]

Answer: 1687.5 N

Explanation:

From the second law of motion given by Newton, Force is the rate change of momentum.

F = \frac{dp}{dt}=\frac {m dv}{dt} = \frac{m (v_f-v_i)}{dt}

Mass of the baseball, m = 0.15 kg

Initial velocity, v_i=-40 m/s (negative because direction of initial velocity is opposite to the final velocity)

Final velocity, v_f=50 m/s

The duration of collision, dt= 8.0 \times 10^{-3} s

Force, F = \frac{0.15 kg (50-(-40) m/s)}{8.0 \times 10^{-3} s}=1687.5 N

Hence, the value of force is 1687.5 N.

8 0
2 years ago
3.The space heater in a room does not have a fan, but after a few minutes you feel warm air moving by you. What type of energy t
Natali [406]
Heat transfer

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6 0
2 years ago
A man ran a 5 mile race. The race looped around a city park and back
Tems11 [23]
10 miles common since
7 0
3 years ago
Mr. Ben drove from Town A to Town B. For the first 3 h, he traveled at an average speed of
Vanyuwa [196]

Answer:

It’s 7 hours

Explanation:

You have to use the formula your teacher has given to you plug in the numbers then solve be sure to use a calculator made for physics it helps a lot :)

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