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A tennis ball has a mass of 56 g and is falling near the surface of the earth. Calculate the magnitude of the gravitational force exerted on the tennis ball by the earth.

A race car has a speed of 80 m/s when the driver releases a drag parachute. If the parachute causes a deceleration of –4 m/s2, how far will the car travel before it stops?

During a relay race, runner A runs a certain distance due north and then hands off the baton to runner B, who runs for the same distance in a direction south of east. The two displacement vectors A→{“version”:”1.1″,”math”:”A→”}  and B→{“version”:”1.1″,”math”:”B→”}  can be added together to give a resultant vector. Which drawing correctly shows the resultant vector?

A boat is being pulled up the middle of a canal at a steady speed by two horses, one on each side of the canal. The ropes tying the boat to the horses each make an angle of 30° with the lengthwise direction of the canal. If the force exerted on each horse by its rope is 2000 N, how much force would a single rope need to accomplish the same effect as the two forces added together?

The surface of a lake has an area of 1.67 x 108 ft2. What is the area of the lake in m2?

When considering the stability of IQ, which of the following statements is MOST likely to be true?

Which of the following illustrates convergent thinking?

Which example best illustrates the insecure-avoidant attachment style in infants in unfamiliar settings?

An in-ground swimming pool has the dimensions shown in the drawing. It is filled with water to a uniform depth of 3 m. What is the total force exerted on the bottom of the swimming pool? (Patmospheric = 1.013×105 Pa)

An object is moving at a constant velocity. All but one of the following statements could be true. Which one cannot be true?