A skydiver reaches terminal velocity when: A) The drag force equals their weight.B) The drag force is zero.C) The net force is maximum.D) The acceleration is at its peak.
Two objects are dropped simultaneously from the same height….
Two objects are dropped simultaneously from the same height. One object is projected horizontally while the other falls vertically. Which hits the ground first? A) The horizontally projected objectB) The vertically dropped objectC) Both hit the ground at the same timeD) Depends on the horizontal velocity
Which of the following is a scalar quantity? A) Displacement…
Which of the following is a scalar quantity? A) DisplacementB) VelocityC) SpeedD) Acceleration
What is the equation for displacement under constant acceler…
What is the equation for displacement under constant acceleration? A) x=vt+12at2x = v t + \frac{1}{2} a t^2B) x=vt−12at2x = v t – \frac{1}{2} a t^2C) x=v2+atx = v^2 + a tD) x=v+atx = v + at
A 15 kg object experiences a net force of 30 N. What is its…
A 15 kg object experiences a net force of 30 N. What is its acceleration? A) 0.5 m/s20.5 \, \text{m/s}^2B) 1.0 m/s21.0 \, \text{m/s}^2C) 2.0 m/s22.0 \, \text{m/s}^2D) 3.0 m/s23.0 \, \text{m/s}^2
Which of the following best describes the behavior of a mate…
Which of the following best describes the behavior of a material obeying Hooke’s Law? A) The material returns to its original shape after deformation.B) The material breaks under any load.C) The deformation is proportional to the applied load until the elastic limit.D) The material deforms permanently after removing the load.
An object moves in a circle of radius 5 m with a speed of 10…
An object moves in a circle of radius 5 m with a speed of 10 m/s. What is the centripetal acceleration? A) 10 m/s210 \, \text{m/s}^2B) 20 m/s220 \, \text{m/s}^2C) 50 m/s250 \, \text{m/s}^2D) 100 m/s2100 \, \text{m/s}^2
Which of the following statements is true for an object in f…
Which of the following statements is true for an object in free fall near Earth’s surface? A) The acceleration is zero.B) The velocity increases by 9.8 m/s every second.C) The displacement decreases uniformly.D) The speed remains constant.
According to Newton’s first law, what happens to an object i…
According to Newton’s first law, what happens to an object in motion with no net external force? A) It accelerates.B) It slows down.C) It moves with constant velocity.D) It stops eventually.
A force of 50 N is applied to a 20 kg block on a horizontal…
A force of 50 N is applied to a 20 kg block on a horizontal surface. If μk=0.2\mu_k = 0.2, what is the net force acting on the block? (Take g=9.8 m/s2g = 9.8 \, \text{m/s}^2) A) 6 N6 \, \text{N}6NB) 10 N10 \, \text{N}10NC) 14 N14 \, \text{N}14ND) 30 N30 \, \text{N}30N