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?

Question

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&#039;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 · Accepted Answer

1) object moves 15 m in 3 seconds velcoity=153=5 m/s 2) velcoity=442=22 ms =2200cms 3) chargemass=1.6×10−199.1×10−31=1.75×1011 Ckg 4) averagevelocity=distancetime=1005=200 kmh

poleglit3 · Accepted Answer

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 · Accepted Answer

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