Why does your head jerk forward when the bus stops?
You said a moving ball slows down in space without a push. Nothing pushes or pulls it there, so Newton's first law says it keeps going.
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1 lesson for “Newton's first law of motion”
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Does doubling pressure double the volume?
Double the pressure and the volume halves; double the kelvin temperature and it doubles. Match each law to its direction.
Try this lessonDo molecules in a solid ever move?
You said the molecules in a solid are frozen still. They are never still: every particle vibrates, and heat changes how fast they shake.
Try this lessonWhat is (x + 3)(x + 5) expanded?
Every part of one binomial multiplies every part of the other. Four little products, then one tidy sum.
Try this lessonWhich move comes first?
Isla solved 3x + 4 = 19 by writing 3x = 23, giving x = 23/3. She never removed the +4 before dividing.
Try this lessonWhich number goes first in a ratio?
Nia counted 10 bus riders and 6 walkers and wrote the ratio of walkers to bus riders as 5:3. She answered a different question than the one asked.
Try this lessonWhich reactant runs out first?
3.0 mol of O2 and 4.0 mol of H2: which runs out first? The ratio decides, not the smaller number.
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