# physics

an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of 144km/h . what is the average speed of whole journey in m/s?

1. 👍 0
2. 👎 0
3. 👁 120
1. 144km/h = 144,000m/3600s = 40 m/s.

V = (60+40)/2 = 50 m/s.

1. 👍 0
2. 👎 0
posted by Henry
2. average speed is 48 m/s

1. 👍 0
2. 👎 0
3. 144km/h = 144,000m/3600s = 40 m/s.

V = (60+40)/2 = 50 m/s

1. 👍 0
2. 👎 0
posted by sanch

## Similar Questions

1. ### Oob

an object moves from point p to q with an average speed of 60m/s and comes back from point q to p with an average speed of 144km/h . what is the average speed of whole journey in m/s?

asked by Mmm!m on April 15, 2017
2. ### science

If an object is thrown 60m into the air and it takes the object 6s to get there what's there average speed of the object

asked by Jay on February 28, 2015
3. ### Astronomy

Now imagine you’re an astronomer on Earth looking at the spectrum of an object in space. In the spectrum you are looking for the so-called Lyman- alpha line of hydrogen which occurs at a wavelength of  = 122 nm. In your

asked by qwerty on October 1, 2013
4. ### Calculus

An object moves from left to right along a parabolic shaped path y=(1/4)x^2. At the point (-2,1) the speed is 1. What normal acceleration is the object experiencing at that point?

asked by Tony on February 16, 2016
5. ### physics

An object moves along a circular path with a constant speed, |⃗vo|. (Semi Circle with point A on one side point B on the other. Looks like a 90 degree angle with points A and B on either side of the hypotenuse.) The average

asked by Jess on November 8, 2012
1. ### physics

A block of weight w = 25.0 N sits on a frictionless inclined plane, which makes an angle = 25.0 with respect to the horizontal, as shown in the figure. A force of magnitude F= 10.6 N , applied parallel to the incline, is just

asked by michelle on October 3, 2010
2. ### Physics

An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and starts at rest at point A. (a) What is the object's speeds at point B, at point C, and at point D?

asked by Kelly on March 31, 2010
3. ### Physics

An object moves along the x axis, subject to the potential energy shown in Figure 8-24. The object has a mass of 1.8 kg, and starts at rest at point A. (a) What is the object's speeds at point B, at point C, and at point D?

asked by Kelly on March 31, 2010
4. ### Calculus

An object moves in the xy-plane so that its velocity vector for 0

asked by Anonymous on April 14, 2018
5. ### maths applications of trigonometry

if an object is observed with an angle of elevation 60 degrees from a point at a distance of 60m, so find the height of object from the ground

asked by Druthi on December 16, 2017

More Similar Questions