I need help with a few introductory physics prelab questions.1) An object moves 15 meters...

Russell Gillen

Russell Gillen

Answered

2022-01-14

I need help with a few introductory physics prelab questions.
1) An object moves 15 meters in 3 seconds. What is its velocity (in m/s)?
2)What is the velocity (in cm/s) of an object which moves 44 m in 2 s?
3) The charge of an electron is 1.60×1019 C. Determine the charge to mass ratio of the electron (in 1011 C/kg). (Hint: divide the electron's charge by its mass; the answer is a negative number with a positive exponent)
4) What is the average velocity (in kilometers per hour) of a cart that travels 100 km in 5 hours?

Answer & Explanation

Andrew Reyes

Andrew Reyes

Expert

2022-01-15Added 24 answers

1) object moves 15 m in 3 seconds
velcoity=153=5 m/s
2) velcoity=442=22 ms
=2200cms
3) chargemass=1.6×10199.1×1031=1.75×1011 Ckg
4) averagevelocity=distancetime=1005=200 kmh

poleglit3

poleglit3

Expert

2022-01-16Added 32 answers

4) We know that Displacement = Average velocity * Time taken
Hence , Average velocity = Displacement / Time
On substituting the given values, we get that, Average velocity = 100 / 5
alenahelenash

alenahelenash

Expert

2022-01-23Added 366 answers

2) Distance traveled =44 m=44×100 cm=4400 cm Time taken =2 s Velocity=Distancetime=4400 cm2 s

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