Define and calculate average speed and velocity
What is the average speed of a car that travels a distance of 40.0 m in a time of 20.0 seconds?
Average speed is defined as the ratio of total distance travelled to the total time to cover the distance.
Average velocity is defined as the ratio of displacement to time taken in total distance. displacement does not depend on the way of path it is just difference of inital position to final position of an object. velocity is a vector quantity because the displacement is a vector quantity.
distance travelled by car (s) = 40.0 m.
time taken to cover the distance (t) = 20.0 s.
Average speed will be,
Solutions are written by subject experts who are available 24/7. Questions are typically answered within 1 hour.*See Solution
Q: In the following exercises assume that there's no damping.
A: At equilibrium condition,
Q: By what numerical factor will the range increase if you use a spring gun (fired horizontally) which ...
A: The projectile is thrown from a height of 100 cm with velocity 4 times that initial velocity used in...
Q: In Fig. 3-27, a heavy piece of machinery is raised by sliding it a distance d =12.5 m along a plank...
A: (a) Use the trigonometrical identity sine in the right-angle triangle to determine vertical distance...
Q: Calculate the density in g/ml of H2O if a 9846 ml bottle weighs 689 g.
A: The density is defined as ratio of mass by volume.
Q: Answer must be according the correct signifcant numbers.
A: It is given that
Q: A flea jumps by exerting a force of 1.20×10−5N straight down on the ground. A breeze blowing on the ...
A: According to the Newton’s second law, the net force acted on the flea is, Substitute the values, to...
Q: A cameraman on a pickup truck is traveling westward at 20 km/h while he videotapes a cheetah that is...
A: Click to see the answer
Q: The figure below shows a box-shaped closed surface with one of its edges lying on the x-axis, and it...
A: a) The net electric flux for the right and left surface will be available and other surface will get...
Q: A player shoots a basketball as shown below. R. Points S and R are at the same height and points up....
A: Projectile motions are the 2-D motion in which an object is in motion along vertical and horizontal ...