Net Force
A 12kg block is accelerated 3m/s2. What is the net force on the block?
36N
The net force on a 3kg block is 21N. What is the block's acceleration?
7m/s2
A block experiences a net force of 10N and accelerates 5m/s2. What is the block's mass?
2kg
The forces on an object are unbalanced. Must the object be accelerating?
Yes
A 6.27kg chair is accelerated 4.35m/s2. What is the net force on the chair (to three significant figures)?
27.3N
The net force on a 1250kg car is 5670N. What is the car's acceleration (to three significant figures)?
4.54m/s2
A bookshelf experiences a net force of 40.2N and accelerates 2.19m/s2. What is the bookshelf's mass (to three significant figures)?
18.4kg
The forces on an object are balanced. Could the object be moving?
Yes
A 10g ball accelerates 5m/s2 down a slope. What is the net force on the ball?
0.05N
A 50g model rocket experiences a net force of 5N. What is the model rocket's acceleration?
100m/s2
A jet experiences 120kN (120 kilonewtons) of net force and accelerates 3m/s2. What is the jet's mass?
40,000kg
An object's acceleration is ______ proportional to its net force.
directly
A 45.6g golf ball is accelerated 10.5m/s2. What is the net force on the golf ball (to three significant figures)?
0.479N
A 565,000kg rocket experiences a net force of 13,500kN (13,500 kilonewtons). What is the rocket's acceleration (to three significant figures)?
23.9m/s2
A steam locomotive experiences a net force of 113kN (113 kilonewtons) and accelerates at a rate of 1.67m/s2. What is the steam locomotive's mass (to three significant figures)?
67,700kg
An object's acceleration is ______ proportional to its mass.
inversely
A 71.3kg man sits on a 900g skateboard and accelerates 5.28m/s2 down a slope. What is the net force on the man & skateboard system (to three significant figures)?
381N
A 755g toy is being pushed 6.43N along the ground and experiences 2.34N of kinetic friction. What is the toy's acceleration (to three significant figures)?
5.42m/s2
A net force of 10.5N accelerates a block from rest to a speed of 15.2m/s in the span of 3.01s. What is the block's mass (to three significant figures)?
2.08kg
An object's mass is ______ proportional to its acceleration.
inversely