Newtons first law
Newtons second law
Newtons third law
mystery
67
If an object is moving at 0km/h is it moving with a constant speed?
yes
67
what is newtons second law?
F=m*a
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If Adriano punches Arsenijs unconcius, what will happen to Adriano?
The same force that Adriano punched Arsenijs with will have an equal but opposite reaction.
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What weighs more 1kg of metal or 1kg of feathers
they both weigh the same
670
A hockey puck slides on ice with constant velocity suddenly it slows down and stops.
Which force caused the change in motion, and why doesnt this contradict Newtons first law?
The force is friction and it does not contradict the first law as an object stays in motion unless a net force acts on the hockey puck
670
A 5 kg object accelerates at 2 m/s2.
What net force acts on the object?
Using Newton's Second Law:
F = m*a = 5 × 2 = 10 N
670
Leon pushes the water backwards with a force of 50 N.
What force does the water exert on Leon, and in which direction?
The water pushes Leon forward with 50 N (equal and opposite force).
670
Vanessa give us more sleep
6700
Two boxes (2 kg and 3 kg) are connected by a rope and pulled with 25 N on a frictionless surface.
a) What is the acceleration?
b) What is the tension in the rope?
Total mass = 2 + 3 = 5 kg
a = F/m = 25 / 5 = 5 m/s2
Tension = force needed to accelerate one box
T = 2 × 5 = 10 N
a=5m/s2
b=10N
6700
A truck collides with a small car.
Which vehicle experiences the greater force?
Neither they experience equal forces
6700
who is the best english and physics teacher?
Adriano, Leon, Arsenijs and Lukas E