You COULD find acceleration by taking a lot of distance measurements,
but that's definitely the hard way to do it.
Acceleration is (change in speed) divided by (time for the change).
So the basic way to calculate acceleration is to measure the change
in speed, not distance.
Answer:
2.12×10^-2hour
Explanation:
Acceleration is defined as the change in velocity of a body with respect to time.
Using one of the equations of motion:
S = ut + 1/2at²
Where S is the distance traveled by the airplane
u is the initial velocity
a is its acceleration
t is the time of travel
Given a = 1.2×104 km/h²
u = 60km/hr
t= ?
S = 4km
Substituting the values given into the formula to get 't'
4 = 60t+1/2(1.2×10⁴)t²
4 = 60t+0.6×10⁴t²
0.6×10⁴t²+60t-4= 0
Factorizing the quadratic equation
t = -b±√b²-4ac/2a
Where a= 6000 b = 60 c = -4
t = -60±√60²-4(6000)(-4)/2(6000)
t = -60±√3600+96000/12000
t = -60±√99600/12000
t = -60±315.6/12000
t = -60+315.6/12000
t= 255.6/12000
t = 0.0212hour
t = 2.12×10^-2hour
The ship is at rest with reference to any point that's ON the ship.
It's in motion with reference to any point that's NOT on the ship
or glued to it.
Answer:
Explanation:
First, it is required to model the function that models the increasing force in the +x direction:
The equation is:
The impulse done by the engine is given by the following integral:
Answer:
Kinetic energy is 1000 J.
Explanation:
Given:
Mass of the bicycle,
Distance traveled,
Time of travel,
Unknowns:
Speed of the bicycler, .
Kinetic energy of the bicycler.
Equation:
Speed of the bicycler is,
Therefore, the kinetic energy of the bicycler is given as,
Substitute:
Plug in 5 m/s for and 80 kg for . Solve for KE.
Solve:
Therefore, his kinetic energy is 1000 J.