03 Projectile Motion Comprehesion

Why does a projectile follow a curved path instead of a straight line?

なぜ投射物は直線ではなく曲線の軌道をたどるのですか？

• Air pushes it sideways

• Gravity pulls it downward

• It loses speed

• Earth is round

If you launch two projectiles at the same speed, one at 30° and one at 60°, which lands farther?

同じ速度で30度と60度の角度で投射した場合、どちらがより遠くに届きますか？

• 30°

• 60°

• Same distance

• Not enough info

What happens if you increase the mass of the projectile (ignoring air)?

投射物の質量を増やした場合（空気抵抗を無視）、どうなりますか？

• Travels farther

• Travels less

• No change

• Falls straight down

How does angle affect flight time?

角度は飛行時間にどのように影響しますか？

• Higher angle = shorter time

• Higher angle = longer time

• No effect

• Random

What causes the projectile to start falling after launch?

投射後に物体が落下し始める原因は何ですか？

• Friction

• Energy loss

• Gravity

• Rotation

In a vacuum, what path does a projectile follow?

真空中では、投射物はどのような軌道をたどりますか？

• Zigzag

• Spiral

• Perfect parabola

• Wavy

Why doesn’t a projectile travel forever?

なぜ投射物は永遠に飛び続けないのですか？

• It gets tired

• Air pushes it back

• Gravity pulls it down

• Magnetic force

Which combination gives maximum range?

最大の到達距離を得る組み合わせは？

• Low speed, low angle

• High speed, low angle

• High speed, 45° angle

• Low speed, 90° angle

What is the role of horizontal velocity in projectile motion?

投射運動における水平速度の役割は何ですか？

• Determines time

• Affects flight distance

• Adds weight

• Changes angle

What happens at the highest point of the projectile path?

投射物の軌道の最高点で何が起こりますか？

• Both speeds are zero

• Horizontal speed is zero

• Vertical speed is zero

• Total stop