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True/False: When hit with a bat, a baseball doesn't exert any force on the bat. Select one: True False 2.True/False:
1.True/False: When hit with a bat, a baseball doesn't exert any force on the bat.
2.True/False: When a string passed over a pulley is attached with an equal number of washers on each side, the weights will not undergo any motion after you let go.
3.In a weightless environment, 5 ml of vinegar is put in a test tube and baking soda is added to it. Immediately after, a balloon is fitted over the top of the test tube. Which of the following will you observe once the pressure in the test tube is high enough?
a. The test tube and balloon move in the direction of the balloon.
b. Test tube remains at rest and balloon moves away from it.
c. Test tube and balloon move in opposite directions to each other.
d. The test tube and balloon move in the direction of the test tube.
4.Which of the following statements is true for the pair of forces in Newton's third law?
a. The two forces act on different objects
b. The two forces never produce acceleration
c. The two forces cancel each other
d. Newton's third law applies only to internal forces
5.Five washers, each of mass 2.5 grams, are tied on each end of a string. What is the net force acting on each side of the string? Assume that the acceleration due to gravity is 10 m/s2.
a. 0.250 N
b. - 0.125 N
c. 0.125 N
d. 0 N
6.Consistent with Newton's third law of motion, a bullet fired from a rifle pushes backwards upon the rifle. Which of the following is true about their accelerations?
a. acceleration of bullet ≥ acceleration of rifle
b. acceleration of bullet = acceleration of rifle
c. acceleration of bullet < acceleration of rifle
d. acceleration of bullet > acceleration of rifle
7.When you punch a wall, the wall exerts a force on your hand. Which of the following is true about the magnitude of the force exerted by the wall?
a. It can be more or less than the force exerted on it by the punch.
b. It is less than the force exerted on it with the punch.
c. It is equal to the force exerted on it by the punch.
d. It is greater than the force exerted on it by the punch.
8.It requires greater force to move a 50 kg table than a 15 kg table because
a. the inertia of the 50 kg table is greater than that of the 15 kg table.
b. the inertia of the 15 kg table is greater than that of the 50 kg table.
c. the inertia of the 15 kg table is zero.
d. the inertia of the 50 kg table is zero.
9.Holding a container of water, you walk 15 feet in a straight line at constant speed and then suddenly turn towards right. Water in the container will...
a. moves forward.
b. move towards the right.
c. move towards the left.
d. does not move.
10.True/False: Changing the length of a string passing over a pulley won't affect the acceleration of the string or washers attached to its free ends on both sides.