Ap Physics 1 Mcq 2 Revision Exam Questions All Solved Correct.The figure above shows a truck pulling three crates across a rough road. Which of the following shows the directions of all the horizontal forces acting on crate 2 ? - Answer three arrows pointing to the left (rope, crate 3, friction) cable arrow to the right Two blocks are on a horizontal, frictionless surface. Block A is moving with an initial velocity of v0 toward block B, which is stationary, as shown above. The two blocks collide, stick together, and move off with a velocity of v0/3 . Which block, if either, has the greater mass? - Answer Block B A student sets an object attached to a spring into oscillatory motion and uses a motion detector to record the velocity of the object as a function of time. A portion of the recorded data is shown in the figure above. - Answer -5 cm /s -The slope of the tangent to a best-fit sinusoidal curve at 0.7 s -1.60 Hz Two students need to move two identical boxes of mass M0M0 across a room where friction between the floor and the boxes cannot be neglected. One student moves the first box by pushing with a force of magnitude F0F0 at an angle θθ from the horizontal, as shown in the figure for scenario 1. The other student moves the second box by pulling with a force of magnitude F0F0 at the same angle θθ from the horizontal, as shown in the figure for scenario 2.
- Answer Scenario 1 is a straight line that is close to the bottom whilst scenario 2 is a positive
- Answer F0cosθ−μ(M0g−F0sinθ)/M0
slope up Two students need to move two identical boxes of mass M0M0 across a room where friction between the floor and the boxes cannot be neglected. One student moves the first box by pushing with a force of magnitude F0F0 at an angle θθ from the horizontal, as shown in the figure for scenario 1. The other student moves the second box by pulling with a force of magnitude F0F0 at the same angle θθ from the horizontal, as shown in the figure for scenario 2.
A box of mass m is initially at rest at the top of a ramp that is at an angle θ with the horizontal.The block is at a height h and length L from the bottom of the ramp. The block is released and slides down the ramp. The coefficient of kinetic friction between the block and the ramp is µ .What is the kinetic energy of the box at the bottom of the ramp? - Answer mgh - µmgL cos θ 1 / 2
During an experiment a student records the net horizontal force exerted on an object moving in a straight line along a horizontal frictionless track. The graph above shows the force as a function of time. Of the following, which is the best approximation of the magnitude of the change in momentum of the object between 0 s and 4 s? - Answer 30 kg ⋅ m/s Four different constant forces are exerted on a 2.0 kg2.0 kg object. The figure represents the magnitude and direction of each force. If the object is initially at rest, how long will it take the object to reach a speed of 2.0 m/s2.0 m/s? - Answer 4.0 s The figure above shows the paths of two stars of equal mass as they orbit their common center of mass. The positions of the stars at four different times are labeled in the figure. At which of the positions do the stars have their greatest speed? - Answer Position 4 only A cylinder at rest is released from the top of a ramp, as shown above. The ramp is 1.0 m high, and the cylinder rolls down the ramp without slipping. At the bottom of the ramp, the cylinder makes a smooth transition to a small section of a horizontal table and then travels over the edge at a height of 1.0 m above the floor, eventually landing on the floor at a horizontal distance of 1.5 m from the table.As the cylinder rolls down the ramp, how do the potential energy of the cylinder-Earth system and the kinetic energy of the cylinder change, if at all? - Answer P.E of Cylinder earth system- decreases K.E of cylinder- increases Rotational K.E- stays the same Translational K.E- increases Ks = Kc , because the gravitational force does equal work on each object as it rolls down the ramp.A student swings a ball on a light rod at a constant speed in a vertical circle, as shown in the figure. Which of the following correctly ranks the magnitudes of the forces exerted by the rod on the ball F1F1, F2F2, F3F3, and F4F4 when the ball is at locations 1, 2, 3, and 4, respectively? - Answer (F2=F3)>F4>F1 A small block slides without friction along a track toward a circular loop. The block has more than enough speed to remain firmly in contact with the track as it goes around the loop. The magnitude of the block's acceleration at the top of the loop is - Answer greater than g
- / 2