For physics

the graph shows the motion of an object traveling in a straight line as a function of time. what is the average speed of the object during the first two seconds?
a. 5m/s
b. 2.5m/s
c. 10m/s
d. 20m/s

see picture above

Thomas his older brothers, who own a junk yard, on the weekends to earn extra money. he likes to them push broken-down cars to the back of the junk yard because it makes him feel strong. last saturday, they pushed three cars with different weights, and he noticed he used different amounts of force for each one. the cars were the following weights: white car: 2,700 kg red car: 1,500 kg blue car: 2,100 kg think about how much force is needed to move each car. which correctly lists the cars in order from the most to least amount of force needed to move them? a) white, blue, red b) blue, red, white c) red, white, blue d) white, red, blue

The frequencies refer to the sample data collected from a population of interest when performing a hypothesis test comparing two or more population proportions.

Acapacitor is storing energy of 3 joules with a voltage of 50 volts across its terminals. a second identical capacitor of the same value is storing energy of 1 joule. what is the voltage across the terminals of the second capacitor?