Acar traveling with constant speed travel 150 km in 7200s. what is the speed of the car?

You throw a baseball directly upward at time t = 0 at an initial speed of 12.3 m/s. what is the maximum height the ball reaches above where it leaves your hand? at what times does the ball pass through half the maximum height? ignore air resistance and take g = 9.80 m/s2.

1.what is where an object is located 2. what is how fast an objects speed is changing 3. what is how fast an object is moving

What is the measurement of how fast an object moves relative to a reference point?