Motion
A car moves at 15 m/s for 20 s. How far does it travel?
300 m.
A 2 kg cart accelerates at 3 m/s². Net force?
6 N
A 2 m lever has a 10 N force perpendicular at the end. Torque?
20 N·m
KE of a 2 kg mass at 3 m/s?
9 J
Largest planet in our solar system?
Jupiter
Capital of France?
Paris
Who created Harry Potter?
J. K. Rowling.
From rest, an object accelerates at 2 m/s² for 5 s. Final speed?
10 m/s.
Weight of a 60 kg person on Earth (g = 9.8 m/s²)?
588 N.
Child A (30 kg) sits 2 m from pivot. Where to seat Child B at 1.5 m to balance? Mass of B?
40 kg.
Work by a 10 N force over 5 m (parallel)?
50 J.
How many continents are there?
Seven
Major river through Cairo?
The Nile.
2010s mobile AR game about catching creatures in the real world?
Pokemon GO
v₀ = 5 m/s, a = 3 m/s², t = 4 s. Displacement?
44 m
Forces of 3 N east and 4 N north act together. Resultant magnitude?
5 N
A 0.25 m wrench must deliver 30 N·m. Needed perpendicular force?
120 N.
GPE of 1.5 kg raised 2 m (g = 9.8)?
29.4 J.
Chemical symbol for gold?
Au
Largest hot desert on Earth?
Sahara
Stage name of Shawn Carter?
Jay-Z
Drop from rest: how long to fall 20 m (ignore air)?
2.02 s
A 70 kg person in an elevator accelerating upward at 2 m/s² stands on a scale. Reading?
826 N (approximately)
Uniform 2 m plank (weight 100 N) pivot at center. A 50 N weight is 0.5 m left. Where to hang 25 N on right to balance?
1.0 m right of center.
Spring k = 200 N/m compressed 0.10 m. Stored energy?
1.0 J
Who wrote “1984”?
George Orwell.
Kyoto is in which country?
Japan
Which streaming service released “Stranger Things”?
Netflix
Two trains approach: 20 m/s and 10 m/s, 900 m apart. Time to meet?
30 s.
5 kg block on a frictionless 30° incline. Acceleration down the slope?
4.9 m/s².
Force of 40 N applied at 60° to a 0.9 m door (perpendicular distance r = 0.9 m). Torque?
31.2 N·m.
Object drops 5 m (no air). Speed at bottom?
9.9 m/s.
First element on the periodic table?
Hydrogen
Mountain range that traditionally separates Europe and Asia?
Ural mountains
2019 South Korean film that won the Best Picture Oscar?
Parasite
Launched at 20 m/s at 30° (no air). Range? (g = 9.8)
35.4 m.
Two blocks m₁ = 2 kg, m₂ = 3 kg on frictionless surface. A 15 N force pulls the pair. Tension between blocks?
6 N.
Massless 1 m rod pivot at center. 3 kg is 0.4 m left. Where to place 2 kg on right to balance?
0.60 m right of pivot.
2 kg block slides 10 m with μₖ = 0.20 from 10 m/s. Final speed?
7.8 m/s
What process do plants use to make food from sunlight?
Photosynthesis
Highest mountain in Africa?
Kilimanjaro
Who released the visual album “Lemonade”?
Beyonce
A river is 100 m wide. Boat speed in still water 2 m/s; current 1 m/s. Aimed straight across. Downstream drift on reaching far bank?
50 m.
2 kg block on a rough horizontal surface (μₖ = 0.20) pulled by 10 N. Acceleration?
3.04 m/s².
A massless 1 m rod has 4 kg at the left end and 1 kg at the right end. Where from the left end should the pivot be for balance?
0.20 m from the left.
A 1 kg block is pushed by a spring (k = 100 N/m) compressed 0.30 m up a frictionless 30° incline. How far along the incline does it travel?
0.92 m
Who developed the theory of general relativity?
Einstein
Lesotho is an enclave entirely within which country?
South Africa
Video game series starring Master Chief?
Halo