= 20.5 km/h
A car accelerates from 0 km/h to 100 km/h in 10 seconds . The acceleration can be calculated by transforming (1b) to
a = (v - v 0 ) / t
= ( (100 km/h) (1000 m/km) / (3600 s/h) - (0 km/h) ( 1000 m/km) / (3600 s/h) ) / (10 s)
= 2.78 (m/s2)
Angular velocity can be expressed as (angular velocity = constant):
ω = θ / t (2)
where
ω = angular velocity ( rad /s)
θ = angular distance ( rad )
t = time (s)
Angular velocity and rpm:
ω = 2 π n / 60 (2a)
where
n = revolutions per minute (rpm)
π = 3.14...
The tangential velocity of a point in angular velocity - in metric or imperial units like m/s or ft/s - can be calculated as
v = ω r (2b)
where
v = tangential velocity (m/s, ft/s, in/s)
r = distance from center to the point (m, ft, in)
A 26 inches bicycle wheel rotates with an angular velocity of π radians/s (0.5 turn per second) . The tangential velocity of the tire can be calculated as
v = ( π radians/s ) ((26 inches) / 2)
= 40.8 inches/s
Angular velocity can also be expressed as (angular acceleration = constant):
ω = ω o + α t (2c)
where
ω o = angular velocity at time zero ( rad /s)
α = angular acceleration or deceleration (rad/s2)
Angular distance can be expressed as (angular acceleration is constant):
θ = ω o t + 1/2 α t2(2d)
Combining 2a and 2c:
ω = (ω o 2+ 2 α θ) 1/2
Angular acceleration can be expressed as:
α = dω / dt = d2θ / dt2(2e)
where
dθ = change of angular distance (rad)
dt = change in time (s)
A flywheel is slowed down from 2000 rpm ( revolutions /min) to 1800 rpm in 10 s . The deceleration of the flywheel can be calculated as
α = ((2000 rev/min ) - (1800 rev/min )) (0.01667 min/s) (2 π rad / rev ) / (10 s)
= 2.1 rad /s2
= (2.1 rad/s2) (360 / (2 π) degrees/rad)
= 120 degrees/s2
Angular moment or torque can be expressed as:
T = α I (2f)
where
T = angular moment or torque (N m)
I = Moment of inertia (lb m ft2, kg m2)
Motion of bodies and the action of forces in producing or changing their motion - velocity and acceleration, forces and torque.
The relationships between forces, acceleration, displacement, vectors, motion, momentum, energy of objects and more.
Change in velocity vs. time used.
Converting between units of acceleration.
Angular velocity and acceleration vs. power and torque.
A turn or change of direction in which the vehicle banks or inclines, usually towards the inside of the turn.
Power, torque, efficiency and wheel force acting on a car.
Car acceleration calculator.
Forces due to circular motion and centripetal / centrifugal acceleration.
The connecting rod mechanism.
The momentum of a body is the product of its mass and velocity - recoil calculator.
Forces and torque activated with disk brakes.
Velocity plotted in time used diagram.
Required force and power to lift an elevator.
The kinetic energy stored in flywheels - the moment of inertia.
Forces acting a very short time are called impulse forces.
Energy possessed by an object's motion is kinetic energy.
Calculate piston engine displacement.
Calculate the range of a projectile - a motion in two dimensions.
Radian is the SI unit of angle. Convert between degrees and radians. Calculate angular velocity.
Rolling friction and rolling resistance.
Speed (mph) and time (hours) and distance traveled (miles) chart.
Speed (km/h) vs. time (hours) and distance traveled (km).
Convert between speed and velocity units like m/s, km/h, knots, mph and ft/s.
Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro . Add the Engineering ToolBox extension to your SketchUp from the Sketchup Extension Warehouse!
We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.
Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.
Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.
AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.
If you want to promote your products or services in the Engineering ToolBox - please use Google Adwords. You can target the Engineering ToolBox by using AdWords Managed Placements.