Question

1. choose the best answer. how does velocity differ from speed? objects can have the same speed, but different velocities. an object can have speed or velocity, but not both. the two terms are interchangeable. velocity increases at a rate double that of speed. 3) choose the best answer. camilla walks from her house to the school. she walks 399 m in 4.2 minutes (min). calculate her average speed. 9.5 m/min 95 m/min 1675.8 m/min 39.9 m/min

Explanation:

Step1: Recall speed - velocity difference

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction). So objects can have the same speed but different velocities if they move in different directions.

Step2: Recall average - speed formula

The formula for average speed is $v=\frac{d}{t}$, where $d$ is the distance and $t$ is the time. Given $d = 399$ m and $t=4.2$ min.

Step3: Calculate average speed

$v=\frac{399}{4.2}=95$ m/min

Answer:

1. Objects can have the same speed, but different velocities.
2. 95 m/min