P10 Force and Motion Flashcards
Rearraging resultant force equation
F = M x A OR A = F/M and M = F/A
What is Newtons second law
Acceleration of an object is :
- resultant force
- Mass of the object
Velocity of an object ……. if the resultant force is in the same direction
Increase
The velocity of an object …….. if the resultant force is in the opposite direction
decrease
Calculate the resultant force on a sprinter of a mass of 80kg who accelerates at 8 m/s squ
640 m/s squ
Calculate the acceleration of a car with 800kg acted on by a resultant force of 3200 N
4 N
The greater the …….. on an object , the greater the objects ……..
- resultant force
- Acceleration
The greater the …… of an object , the smaller its …. for a given force
1 . Mass
2. Acceleration
The resultant ….. acting on an object is …..
- Force
- F = M X A
What is weight measured in
Newtons ( N )
Mass is measured in
Kg
gavitational field strengh is measured in
N / Kg
Calculate the mass of an object
Weight (N) = Mass(kg) X Gravitatioal field strength (N/Kg)
What is Terminal velocity
Maximum Velocity ( speed ) of an object
The Gravitational field strength of the surface of the earth was 9.8 N/Kg.
For the moon it was 1.6
Calculate the weight of a persons mass of 50 Kg ?
50 X 9.8 = 490
