Smashing Dynamics
Level 4, 2026-01-24
All answers must have a value and units
Metric Distance
cmcentimeterbasic unit of distance
mmeter100 centimeters
kmkilometer1000 meters
Imperial Distance
ininch2.5 centimeters
ftfoot12 inches
mimile5280 feet, 1.6 kilometers
Time
secsecondbasic unit of time
minminute60 seconds
hrhour60 minutes
dayday24 hours
Other
ggravity-10 m/sec/sec
A person is dropped out of a plane and falls unitil it hits the ground. If its speed is 151 m/sec when it hits the ground, how long did the fall take?
[1]
A rocket blasts off with an upwards acceleration (not including gravity) of 19 m/sec/sec. How fast will it be going after 4 sec?
[1]
Two rockets blast off with upwards accelerations (not including gravity) of 14 m/sec/sec and 15 m/sec/sec. How much faster will the fastest rocket be going after 10 sec?
[2]
A bus is dropped out of a plane and falls for 8 sec until it hits the ground. How fast will it be going when it hits the ground?
[1]
Two rockets blast off with upwards accelerations (not including gravity) of 14 m/sec/sec and 12 m/sec/sec. How much faster will the fastest rocket be going after 7 sec?
[2]
A person travels at 7 feet/hour while a dog travels at 6 feet/hour. If they race for 6 hours, how far will person be ahead by?
[2]
A door is closing in 6 seconds. How fast do you need to travel to get through the door if you are 96 centimeters away?
[1]
A scooter travels at 5 centimeters/minute around a square with a side of 2 centimeters. How long will the scooter take to get around the square?
[2]
A person traveling at 3 ft/day stops in 8 day. What is its acceleration?
[1]
A cheetah speeds up to 9 km/min in 5 min. What is its acceleration?
[1]
A tiger accelerates at 5 mi/day/day for 2 day. How fast is it going?
[1]
A bike traveling at 2 km/hr decelerates at 4 km/hr/hr. How long will it take to stop?
[1]
A kid travels at 3 centimeters/second while a tiger travels at 13 centimeters/second towards it. If they are 7 centimeters apart, how long will it take for them to meet?
[2]
A kid accelerates at 6 cm/min/min for 4 min. How fast is it going?
[1]
A bus travels 140 meters in 7 minutes. At what speed did the bus travel?
[1]