A child accelerates at 2.0 kg toy from rest to 4.0 m/s in 8 seconds. What is the force exerted by the child on the toy? O IN
0 0,5N
O4N
O8N

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.

c) up is the direction the magnetic force is acting on the charge.

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answer: 2×10^-2kg

explanation: density= mass per volume

vol=mass/density

converting to s.i units we have;

3÷1000kg = 0.003

1.5÷100m = 0.15

0.003/0.15 = 0.02kg