| Question |
Answer |
| What is the symbol for momentum? |
p |
| Define momentum |
= mass x velocity |
| Define change in momentum |
= final momentum - intial momentum |
| Newton's 2nd law (in terms of acceleration) |
RESULTANT force acting on an object is proportional to its acceleration; the acceleration takes place in the DIRECTION of the resultant force |
| Newton's 2nd law (in terms of momentum) |
the rate of change of momentum of an object is proportional to the RESULTANT force acting on it; the change in momentum takes place in the DIRECTION of the resultant force |
| If F is proportional to ma, what is F equal to? |
F = k ma |
| What is the value of k in F = k ma |
1 |
| how do we define the newton so that k = 1 in F = k ma? |
1 newton is the force that provides a mass of 1 kilogram with an acceleration of 1 metre per second squared |
| Is momentum a scalar or a vector? |
vector |
| What is the unit of momentum? |
kilogram metre per second |
| Define Newton's 2nd law in terms of acceleration |
force = mass x acceleration |
| Define Newton's 2nd law in terms of rate of change of momentum |
force = mass x rate of change of momentum |
| Give a symbol formula for impulse with 'Ft' as the subject of the equation |
Ft = m(v-u) or Ft = mv - mu |
| What is the 'preferred' unit of impulse? |
Ns |
Cardio Block2anatomy
