Russell Gillen

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 $-1.60×{10}^{-19}$ 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?

Andrew Reyes

Expert

1) object moves 15 m in 3 seconds

2)
$=2200c\frac{m}{s}$
3)
4)

poleglit3

Expert

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

Expert