Physics Semester 1 practice

write 47,900 in scientific notation

• 479 x10²
• 4.79 x10⁴
• 4.79 x10²
• 479 x10^-2

how many significant digits in 47,900 

• 5
• 3
• 2
• 4

how many hectoliters in a kiloliter

• 1
• 10
• 100
• 1000

the object is....

• moving forward speeding up
• moving backwards at constant rate
• moving forwards at constant rate
• stationary

a car starts at 10 m/s and accelerates at 4 m/s² for 20 m. How fast is it now going

• 16.1 m/s
• 13.4 m/s
• 11.5 m/s
• 20.0 m/s

if you throw an object upwards at 40 m/s ...about how long until it reaches the top

• 2 s
• 4 s
• 6 s
• 8 s

A truck going 25 m/s runs sideways off a 200 m cliff. How far away does it land ?

• 4.52 m
• 9.80 m
• 160 m
• 226 m

launch an object at 40 m/s at 50^o
What is is horizontal velocity (Vx)

• 40
• 40 sin50^o
• 40 cos50^o 
• 9.80

launch an object at 40 m/s at 50^o
What is is vertical velocity (Vy)

• 40
• 40 sin50^o
• 40 cos50^o 
• 9.80

launch an object at 40 m/s at 50^o
how long until it reaches the top

• 4 s
• 3.1 s
• 2.6 s
• 9.80 s