Explanation:
The horizontal velocity reached by the mass is:
v = v₀ + at
vₓ = 0 + (F/m) (1 s − 0 s)
vₓ = F/m
The force is then removed, so the mass continues at this horizontal velocity.
The vertical velocity reached by the mass is:
v = v₀ + at
vᵧ = 0 + (F/m) (2 s − 1 s)
vᵧ = F/m
The force is then removed, so the mass continues at this vertical velocity.
So at 2 seconds, the mass's velocity has equal components in the x and y directions, and continues to have that velocity at 3 seconds.
Answer:
The driver hits the stationery dog because the applied force is less than required force
Explanation:
Kinetic energy will be given by
where m is the mass of the vehicle and v is the speed/velocity of the vehicle.
Substituting 800 Kg for m and 20 m/s for v we obtain
Frictional force by vehicle pads is given by
where d is the distance moved
Substituting 160000 for KE and 50 m for d we obtain
Therefore, the vehicle hits the dog since the required force is 3200N but the driver applied only 2000 N
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Explanation:
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Explanation:
The acceleration g varies by about 1/2 of 1 percent with position on Earth's surface, from about 9.78 metres per second per second at the Equator to approximately 9.83 metres per second per second at the poles.
Work is a quantity that measures the effects of a force acting over a distance.
