S4 Physics - usatv

1. A train car accelerates uniformly from rest at 1 m s^–2 along a straight line. Find the velocity of the train after 60 s.

一輛火車沿直線從靜止勻速加速至 1 m s^–2。求 60 秒後火車的速度。

• 30 m s^–1

• 40 m s^–1

• 50 m s^–1

• 60 m s^–1

2. A train car accelerates uniformly from rest at 1 m s^–2 along a straight line. Find the distance travelled by the train in the first 60 s.

一輛火車沿直線從靜止勻速加速至 1 m s^–2。求 60 秒內火車行駛的距離。

• 1350 m

• 1800 m

• 2250 m

• 2700 m

3. Bugatti Veyron is one of the fastest accelerating sports cars in the world. It can accelerate from rest to 100 km h^–1 in 2.46 s. Find its average acceleration (in m s^–2) according to the above data.

布加迪威龍是世界上加速最快的跑車之一。它可以在 2.46 秒內從靜止加速到 100 km h^–1。根據上述數據找出其平均加速度（以 m s^–2為單位）。

• 9.3 m s^–2

• 10.3 m s^–2

• 11.3 m s^–2

• 12.3 m s^–2

4. Bugatti Veyron is one of the fastest accelerating sports cars in the world. It can accelerate from rest to 100 km h^–1 in 2.46 s. Find its velocity travelled after 1 s at this average acceleration.

布加迪威龍是世界上加速最快的跑車之一。它可以在 2.46 秒內從靜止加速到 100 km h^–1。找出在1秒後行駛的速度。

• 9.3 m s^–1

• 10.3 m s^–1

• 11.3 m s^–1

• 12.3 m s^–1

5. Bugatti Veyron is one of the fastest accelerating sports cars in the world. It can accelerate from rest to 100 km h^–1 in 2.46 s. Find its distance travelled after 1 s at the average acceleration.

布加迪威龍是世界上加速最快的跑車之一。它可以在 2.46 秒內從靜止加速到 100 km h^–1。找出它在1秒後的行駛距離。

• 5.65 m

• 6.65 m

• 7.65 m

• 8.65 m

6. Galileo dropped a ball from a height of 56 m. Find the time needed for the balls to reach the ground. 伽利略從 56 m 的高度投下一個球。找出球到達地面時所需的時間。

• 2.38 s

• 2.88 s

• 3.38 s

• 3.88 s

7. The Chinese white dolphins sometimes jump out of water. If a dolphin jumps vertically to 2 m above the water surface, find its speed when it just leaves the water surface.

中華白海豚有時會跳出水面。如果海豚垂直跳躍到水面以上 2 m，求它剛離開水面時的速度。

• 6.26 m s^–1

• 7.26 m s^–1

• 8.26 m s^–1

• 9.26 m s^–1

8. In bungee jumping, a person experiences 5.6 s of free fall after leaving the platform. How far does she fall during the 5.6 s of free fall?

在bungee jump中，一個人在離開平台後經歷了 5.6 秒的自由落體。找出他在 5.6 秒後與開始時的總距離？

• 149 cm

• 154 cm

• 159 cm

• 164 cm

14. In bungee jumping, a person experiences 5.6 s of free fall after leaving the platform. Find her velocity after 5.6 s.

在bungee jump中，一個人在離開平台後經歷了 5.6 秒的自由落體。找出他在5.6秒後的速度。

• 51.9 m s^–1

• 52.9 m s^–1

• 53.9 m s^–1

• 54.9 m s^–1

10. James throws a coin vertically upwards. The coin rises up and falls back to his hand in 1 s. Find the velocity of the coin when it leaves James' hand. 小明把一枚硬幣垂直向上拋，硬幣在1秒後回落到他的手上。找出硬幣在剛離開小明手上時的速度。

• 2.91 m s^–1

• 3.91 m s^–1

• 4.91 m s^–1

• 5.91 m s^–1