Physics 121 Formulas - From Practice
Exam 1 Question and answers verified
to pass 2025
A car travels from point A due east a distance of 150 miles to point B at a
speed of 55 mph - How much time does it take for the car to travel this
distance in seconds - correct answer ✔Time = Distance/Speed
The car then moves South-West from B to Point C for another 160 miles at
the same speed. What is the straight-line distance from point A to point C in
miles? - correct answer ✔AC = [BC2 - AB2]1/2
What is the avg speed? - correct answer ✔T = D/S, Vave=Total
Distance/Total Time
How long a time does it take a ball to reach a height 25 m above ground -
correct answer ✔Δy = ½ (-10 m/s2) Δt2 - on the equation sheet
What is the velocity and acceleration of the ball at a height of 25 m above the
ground - correct answer ✔v = - g Δt
a = -10 m/s2
Acceleration - correct answer ✔Δv/Δt
Height of a cliff - correct answer ✔Δy = 1/2(-g)(t)2
how far from a cliff does a ball go? - correct answer ✔Δx = vx * Δt
Exam 1 Question and answers verified
to pass 2025
A car travels from point A due east a distance of 150 miles to point B at a
speed of 55 mph - How much time does it take for the car to travel this
distance in seconds - correct answer ✔Time = Distance/Speed
The car then moves South-West from B to Point C for another 160 miles at
the same speed. What is the straight-line distance from point A to point C in
miles? - correct answer ✔AC = [BC2 - AB2]1/2
What is the avg speed? - correct answer ✔T = D/S, Vave=Total
Distance/Total Time
How long a time does it take a ball to reach a height 25 m above ground -
correct answer ✔Δy = ½ (-10 m/s2) Δt2 - on the equation sheet
What is the velocity and acceleration of the ball at a height of 25 m above the
ground - correct answer ✔v = - g Δt
a = -10 m/s2
Acceleration - correct answer ✔Δv/Δt
Height of a cliff - correct answer ✔Δy = 1/2(-g)(t)2
how far from a cliff does a ball go? - correct answer ✔Δx = vx * Δt
