2nd Law
A 0.40 kg toy car moves at constant acceleration of 2.3 m/s 2 . Determine the net applied force that is responsible for that acceleration.
0.92 N
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.25. The weight of the object is 20N. What is the force of friction?
5 N
If a net horizontal force of 175 N is applied to a bike whose mass is 43 kg what acceleration is produced?
4.07 m/s2
The force of friction between an object and the surface upon which it is sliding is 12N. The weight of the object is 20N. What is the coefficient of kinetic friction?
0.6
What average net force is required to stop a 7 kg shopping cart in 2 s if it’s initially traveling at 3.5 m/s?
-12.25 N
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40. The mass of the object is 3.2 kg. What is the force of friction?
12.5 N
A wooden block is pulled at a constant acceleration of 1.4 m/s 2 . Find the net applied force on the block if its mass is 0.6 kg.
0.84 N
The force of friction between an object and the surface upon which it is sliding is 15N. The mass of the object is 20kg. What is the coefficient of kinetic friction?
0.077
A net force of 345 N accelerates a boy on a sled at 3.2 m/s 2 . What is the combined mass of the sled and boy?
107.8 kg
The coefficient of kinetic friction between an object and the surface upon which it is sliding is 0.40. The weight of the object is 80N. What is the force of friction?
32 N
A train with a mass of 25000 kg increases its speed from 10 m/s to 25 m/s in 20 seconds. Assume that the acceleration is constant and that you can neglect friction.
a. Find the acceleration of the train
b. Find the distance traveled during this 20 s?
c. Find the required acceleration for train
a) 0.75 m/s 2
b) 350 m