You are trying to push your stalled car. Although you apply a horizontal force of 400 N to the car, it doesn’t budge, and neither do you. Which force(s) must also have a magnitude of 400 N?

A 50-kg box is being pushed along a horizontal surface. The coefficient of kinetic friction is 0.35. What horizontal force must be exerted on the box for it to accelerate at 1.2 m/s2? [Hint: Draw the FBD and apply the condition for non-equilibrium in x-direction.]

Jean Piaget thought of human beings as which of the following?

A crate of apples weighing 88.3 N sits at rest on a ramp that runs from the ground to the bed of a truck. The ramp is inclined at 20.0° to the ground. The frictional force exerted on the crate by the ramp is

A 1.20-kg block is at rest on a horizontal floor. If you push horizontally on the 1.20-kg block with a force of 12.0 N, it just starts to move. What is the coefficient of static friction?

Which one is true for an object in dynamic equilibrium? 

Which of the following theorists identified predictable stages of cognition that all children pass through?

Which of the following methods of early childhood education is child-centered, and child-directed, and views the teacher as a facilitator in the learning process?

In a behaviorist learning approach, the teacher will:

What is student-focused planning?