There are four elementary equations in dynamics specifically,
Dynamics Formula -1
Dynamics Formula -2
Dynamics Formula -3
Dynamics Formula -4
Dynamics Formula -5
Where,
- u is initial velocity in m/s
- v is the final velocity in m/s
- s is the distance traveled in m
- a is the acceleration in m/s2
- t is the time taken in s
Dynamics Formulas are valuable in computing the unfamiliar physical quantity when some of these quantities are known.
Dynamics Solved Examples
Underneath are given some problems based on dynamics you can refer to this while solving your assignment problems.
Problem 1: John throws a ball and it moves along the horizontal direction. If it travels a distance of 30 m in 2s. Calculate its acceleration.
Solution:
Known: u (Initial velocity) = 0,
s (Distance traveled) = 30 m,
t (Time taken) = 2 s
Distance travelled is given by
Problem 2: If v2=u2+2as and find the value of ‘v‘, if u=0, a=3, s=150 is given.
Solution:
Known: u (Initial velocity) = 0,
s (Distance traveled) = 150 m,
a (acceleration) = 3 m/s2
v2=u2+2as
v2 = 0 + (2×3×150)
v2 = (2×3×150)
v2 = 900
Final velocity v = ±30 m/s