CERTIFICATION EVALUATION 2026 FULL
SOLUTIONS GUARANTEED PASS
⩥ The direction of the normal force is. Answer: Perpendicular and away
from the surface of contact
⩥ A skydiver steps from a helicopter and falls for a few seconds until he
reaches his terminal velocity. Thereafter, until he opens his parachute,
his acceleration. Answer: Is zero
⩥ Are velocity and acceleration vector or scalar quantities?. Answer:
Vector
⩥ A falling object is said to reach terminal speed when. Answer: Its air
resistance equals the force of gravity on it
⩥ After a cannonball is fired into frictionless space, the amount of force
needed to keep it going equals. Answer: Zero, since no force is
necessary to keep it moving
⩥ A hockey puck sliding across the ice toward the goal is a good
illustration of Newton's. Answer: First law of motion
, ⩥ A net force of 8 N on an object will cause a 4 kg object to accelerate.
Answer: 2 m/s^2
⩥ Newton's 2nd law of motion says that the___ of a body is directly
proportional to the ____ and inversely proportional to the _____ of the
body. Answer: Acceleration, net force, mass
⩥ When A exerts a force on B, B exerts an equal and opposite force on
A. This is a statement of Newton's. Answer: 3rd law of motion
⩥ A bug splatters on the windshield of a moving car. Which object
experiences the greater force of impact?. Answer: The forces are the
same
⩥ If you double the initial walking speed, the amount of time it takes to
stop. Answer: Is two times longer
⩥ A man leans over the edge of a cliff and throws a rock upward at 5m/s.
Neglecting air resistance, one second later the rock's speed is. Answer: 5
m/s
⩥ If an object moves with constant acceleration, its velocity must.
Answer: change by the same amount each second