Question

1. susan drops a ball 15 m in 3 seconds. what is the speed of the ball?

a. 5 m
b. 45 m/s
c. 5 m/s
d. 5m/h
9 jill went to the store with her mom. after they loaded the groceries into the car, her mom pushed the cart to her and asked her to put the cart in the return cradle. when jill pushed the cart, she noticed that it went a lot farther than when she was in the store. this happened because
a. they were outside
b. the mass decreased because there were no groceries in it
c. the mass increased because of the friction
d. there was no change, jill got stronger.

1. what is the velocity of a plane that traveled 3,000 km from new york to california in 5 hours?

a. 600 km/h
b. 15,000 km/h west
c. 600 km/h west
d. 15,000 km/h
using the image complete the questions

1. these students are playing tug of war during field day. explain if it is a balanced or unbalanced force and how you know.

1. what is the net force and in which direction would the force be moving if needed?

Explanation:

Step1: Recall the formula for speed

Speed \(v=\frac{d}{t}\), where \(d\) is distance and \(t\) is time. Given \(d = 15m\) and \(t=3s\).

Step2: Calculate the speed

\(v=\frac{15m}{3s}=5m/s\)

Step3: Recall the concept of balanced and unbalanced forces

A balanced force has \(F_{net}=0\), and an unbalanced force has \(F_{net}
eq0\).

Step4: Calculate the net force for the tug - of - war

The forces are \(F_1 = 400N\) (left) and \(F_2=300N\) (right). \(F_{net}=F_1 - F_2\) (taking left as positive). \(F_{net}=400N-300N = 100N\) (left)

Answer:

1. c. \(5m/s\)
2. It is an unbalanced force. Because the net force \(F_{net}=400N - 300N=100N

eq0\)

1. The net force \(F_{net}=100N\) and the direction is to the left.