Newton's Laws
What makes an object speed up, slow down, or change direction?
What is net force?
Equation for net force
What is F = m a ?
Difference between weight and mass
What is weight measures gravitational force on an object because of its mass; mass measures amount of matter in an object?
Equation for momentum
What is p = m v?
The force needed for a 3.1 kg cat move with an acceleration of 2.7 m/s2
What is 8.4 N?
This law states that objects change their state of motion only when net force is applied
What is Newton's First Law?
SI unit for net force (F)
What is Newtons (N) or kg x m/s2?
Law that explains why objects fall to the ground when dropped
What is Law of Universal Gravitation (all objects attract each other via force of gravity)
SI unit for momentum
What is kg • m/s?
Acceleration needed for a 10.1 kg dog to run with a force of 4.12 N
What is 0.408 m/s2?
This law states that an unbalanced force on an object determines how much an object speeds up or slows down
What is Newton's Second Law?
Acceleration is calculated according to Newton's Second Law as...
What is a = F / m?
Gravitational force (increases/decreases) as mass decreases
What is decreases?
Baseballs 1 and 2 have equal mass, but baseball 1 was thrown at higher velocity than ball 2. Which baseball will experience more momentum?
What is ball 1?
The mass of an object accelerating at 51.2 m/s2 with a force of 61 N
What is 1.2 kg?
This law states that when an object exerts force on another object, the 2nd object exerts a force of equal in size and opposite in direction to the first object
What is Newton's Third Law?
You throw 2 pumpkins with the same mass, but pumpkin 1 is thrown with a larger acceleration. Pumpkin _____ has a greater force
What is pumpkin 1?
Gravitational force (increases/decreases) as distance increases
What is decreases?
2 race cars have equal mass. The momentum of race car 1 is larger than that of race car 2. Which race car's velocity will be lower?
What is race car 2?
The speed of a 0.15 kg orange moving with a momentum of 12 kg • m/s
What is 80 m/s?
Equation for Newton's second law
What is F = ma?
You push 2 carts with equal force. Cart 2 has a larger mass than cart 1. Cart ____ has a larger acceleration
What is cart 1?
What is projectile motion?
Momentum of a 41 kg person swimming at 0.9 m/s
What is 37 (40) kg • m/s?
The momentum of a 0.05 kg golf ball traveling 50 m in 9 seconds
What is 0.3 (0.28) kg • m/s?
Equation for Newton's Second Law (solving for acceleration)
What is a = F / m?
The force of a 0.4 kg football being thrown at 12 m/s for 3 seconds
What is 1.6 (2) N?
Projectile motion has 2 components, which are...
What is vertical and horizontal?
The speed of a 15.8 kg dog that has a momentum of 20.54 kg • m/s
What is 1.3 (1.30) m/s?
The momentum of a 1957 kg car moving at 54 km/hr
What is 29,000 (2.9 x 104) kg • m/s down the road?