Q1. Elmer really likes to cook with onions and he puts onions into almost everything he makes. He generally starts dinner every day around 5:00 pm. As he is cutting the onions, grandfather clock chimes five times because it is 5:00pm. Elmer is also crying because cutting the onions makes his eyes water. One evening he is at a friend's house because they are going out to dinner later. He and his friend are watching TV and the clock chime give times it is 5:00 pm. Elmer's eyes start to water. Which of following is the ucs in this story.
a) Onions
b) watering eyes after the clock chimes
c) Clock chimes
d) Friend's house
Q2. An automobile travelling at 25 km/ hour has kinetic energy equal to 1 x 10^4 J
A.) What is mass of the car?
B.) if the velocity of the car is increased to 50 km/ hour, what is its kinetic energy?
C.) if the velocity is improved to 75 km/ hour, what is its kinetic energy?