Ian walks 2 km to his best friend's house, then walks 0.5 km to the library. He then makes a 2.5 km walk home. The entire walk took him 3 hours. What is his average speed in km/h?

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A cart is rolling across the floor at a constant velocity of 2 m/s to the right. The cart is pushed again to the right, and it starts to accelerate. How are the force of the push and acceleration of the cart related?

What does Newton's second law explain? A. Why the speed of the ride changes B. Why roller coasters have seat belts C. Why roller coasters do not have brakes D. Why roller coasters start with a big hill

An object moving north with an initial velocity of 14 m/s accelerates 5 m/s2 for 20 seconds. What is the final velocity of the object

What does periodic mean

The smallest level of organization in living things is the atom the cell the small tissue the nervous system

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Why does momentum have a direction?

What is the difference between weight and mass?

An object has a mass of 8.00 kg. What is the gravitational force on the object by the earth?

Which of the following best characterizes the free energy change ΔG for an endothermic reaction under physiological conditions? A. The sign of ΔG is positive B. The sign of ΔG is zero C. The sign of ΔG is negative D.